How to hide a div while scrolling using pure JS?












0















so I have a div that covers my whole web page. Beneath it I also have a set of divs. I want to be able to hide my div while scrolling down so my other divs beneath it can start appearing.



the div for now is colored in black with an absolute position. I want this div to be the first page the user sees and then it starts hiding when the user scrolls down and the other divs beneath it to appear.



Here is my html:






body {
margin: 0;
border: 0;
background-color: #201e2f;
}

p {
text-align: justify;
margin: 0;
font-family: Ubuntu;
text-transform: uppercase;
text-indent: 30px;
line-height: 1.5;
font-size: 15px;
}

#parentContainer {
background-color: #ffc107;
height: 250px;
width: 500px;
float: left;
}

#courseImage {
height: 100%;
width: 30%;
float: left;
box-sizing: border-box;
padding: 10px;
}

#courseDescription {
height: 100%;
width: 70%;
float: right;
box-sizing: border-box;
padding-right: 10px;
padding-left: 10px;
padding-top: 10px;
}

button {
height: 50px;
width: 120px;
background-color: #201e2f;
margin: 15px;
border: 0;
color: #ffc107;
border-radius: 5px;
float: right;
font-family: Ubuntu;
font-size: 15px;
}

img {
float: left;
height: 100%;
width: 100%;
}

#wrapper {
display: grid;
grid-gap: 20px 20px;
grid-template-columns: 500px 500px;
justify-content: center;
}

.class1 {
border-top-left-radius: 10px;
}

.class2 {
border-top-right-radius: 10px;
}

.class6 {
border-bottom-right-radius: 10px;
}

.class5 {
border-bottom-left-radius: 10px;
}

#toHide {
background-color: black;
height: 100%;
width: 100%;
position: absolute;
}

<link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
<div id="toHide">
</div>
<div id="wrapper">
<div id="parentContainer" class="class1">
<div id="courseImage">
<img src="wd.png" alt="Sorry, couldn't load image">
</div>

<div id="courseDescription">
<p>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
</p>

<button id="startButton">Start Learning!</button>
</div>
</div>

<div id="parentContainer" class="class2">
<div id="courseImage">
<img src="wd.png" alt="Sorry, couldn't load image">
</div>

<div id="courseDescription">
<p>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
</p>

<button id="startButton">
Start Learning!
</button>
</div>
</div>

<div id="parentContainer">
<div id="courseImage">
<img src="wd.png" alt="Sorry, couldn't load image">
</div>

<div id="courseDescription">
<p>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
</p>

<button id="startButton">
Start Learning!
</button>
</div>
</div>

<div id="parentContainer">
<div id="courseImage">
<img src="wd.png" alt="Sorry, couldn't load image">
</div>

<div id="courseDescription">
<p>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
</p>

<button id="startButton">
Start Learning!
</button>
</div>
</div>

<div id="parentContainer" class="class5">
<div id="courseImage">
<img src="wd.png" alt="Sorry, couldn't load image">
</div>

<div id="courseDescription">
<p>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
</p>

<button id="startButton">
Start Learning!
</button>
</div>
</div>

<div id="parentContainer" class="class6">
<div id="courseImage">
<img src="wd.png" alt="Sorry, couldn't load image">
</div>

<div id="courseDescription">
<p>
Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
</p>

<button id="startButton">
Start Learning!
</button>
</div>
</div>
</div>





how can I do that with pure JS or CSS?










share|improve this question





























    0















    so I have a div that covers my whole web page. Beneath it I also have a set of divs. I want to be able to hide my div while scrolling down so my other divs beneath it can start appearing.



    the div for now is colored in black with an absolute position. I want this div to be the first page the user sees and then it starts hiding when the user scrolls down and the other divs beneath it to appear.



    Here is my html:






    body {
    margin: 0;
    border: 0;
    background-color: #201e2f;
    }

    p {
    text-align: justify;
    margin: 0;
    font-family: Ubuntu;
    text-transform: uppercase;
    text-indent: 30px;
    line-height: 1.5;
    font-size: 15px;
    }

    #parentContainer {
    background-color: #ffc107;
    height: 250px;
    width: 500px;
    float: left;
    }

    #courseImage {
    height: 100%;
    width: 30%;
    float: left;
    box-sizing: border-box;
    padding: 10px;
    }

    #courseDescription {
    height: 100%;
    width: 70%;
    float: right;
    box-sizing: border-box;
    padding-right: 10px;
    padding-left: 10px;
    padding-top: 10px;
    }

    button {
    height: 50px;
    width: 120px;
    background-color: #201e2f;
    margin: 15px;
    border: 0;
    color: #ffc107;
    border-radius: 5px;
    float: right;
    font-family: Ubuntu;
    font-size: 15px;
    }

    img {
    float: left;
    height: 100%;
    width: 100%;
    }

    #wrapper {
    display: grid;
    grid-gap: 20px 20px;
    grid-template-columns: 500px 500px;
    justify-content: center;
    }

    .class1 {
    border-top-left-radius: 10px;
    }

    .class2 {
    border-top-right-radius: 10px;
    }

    .class6 {
    border-bottom-right-radius: 10px;
    }

    .class5 {
    border-bottom-left-radius: 10px;
    }

    #toHide {
    background-color: black;
    height: 100%;
    width: 100%;
    position: absolute;
    }

    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
    <div id="toHide">
    </div>
    <div id="wrapper">
    <div id="parentContainer" class="class1">
    <div id="courseImage">
    <img src="wd.png" alt="Sorry, couldn't load image">
    </div>

    <div id="courseDescription">
    <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
    </p>

    <button id="startButton">Start Learning!</button>
    </div>
    </div>

    <div id="parentContainer" class="class2">
    <div id="courseImage">
    <img src="wd.png" alt="Sorry, couldn't load image">
    </div>

    <div id="courseDescription">
    <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
    </p>

    <button id="startButton">
    Start Learning!
    </button>
    </div>
    </div>

    <div id="parentContainer">
    <div id="courseImage">
    <img src="wd.png" alt="Sorry, couldn't load image">
    </div>

    <div id="courseDescription">
    <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
    </p>

    <button id="startButton">
    Start Learning!
    </button>
    </div>
    </div>

    <div id="parentContainer">
    <div id="courseImage">
    <img src="wd.png" alt="Sorry, couldn't load image">
    </div>

    <div id="courseDescription">
    <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
    </p>

    <button id="startButton">
    Start Learning!
    </button>
    </div>
    </div>

    <div id="parentContainer" class="class5">
    <div id="courseImage">
    <img src="wd.png" alt="Sorry, couldn't load image">
    </div>

    <div id="courseDescription">
    <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
    </p>

    <button id="startButton">
    Start Learning!
    </button>
    </div>
    </div>

    <div id="parentContainer" class="class6">
    <div id="courseImage">
    <img src="wd.png" alt="Sorry, couldn't load image">
    </div>

    <div id="courseDescription">
    <p>
    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
    </p>

    <button id="startButton">
    Start Learning!
    </button>
    </div>
    </div>
    </div>





    how can I do that with pure JS or CSS?










    share|improve this question



























      0












      0








      0








      so I have a div that covers my whole web page. Beneath it I also have a set of divs. I want to be able to hide my div while scrolling down so my other divs beneath it can start appearing.



      the div for now is colored in black with an absolute position. I want this div to be the first page the user sees and then it starts hiding when the user scrolls down and the other divs beneath it to appear.



      Here is my html:






      body {
      margin: 0;
      border: 0;
      background-color: #201e2f;
      }

      p {
      text-align: justify;
      margin: 0;
      font-family: Ubuntu;
      text-transform: uppercase;
      text-indent: 30px;
      line-height: 1.5;
      font-size: 15px;
      }

      #parentContainer {
      background-color: #ffc107;
      height: 250px;
      width: 500px;
      float: left;
      }

      #courseImage {
      height: 100%;
      width: 30%;
      float: left;
      box-sizing: border-box;
      padding: 10px;
      }

      #courseDescription {
      height: 100%;
      width: 70%;
      float: right;
      box-sizing: border-box;
      padding-right: 10px;
      padding-left: 10px;
      padding-top: 10px;
      }

      button {
      height: 50px;
      width: 120px;
      background-color: #201e2f;
      margin: 15px;
      border: 0;
      color: #ffc107;
      border-radius: 5px;
      float: right;
      font-family: Ubuntu;
      font-size: 15px;
      }

      img {
      float: left;
      height: 100%;
      width: 100%;
      }

      #wrapper {
      display: grid;
      grid-gap: 20px 20px;
      grid-template-columns: 500px 500px;
      justify-content: center;
      }

      .class1 {
      border-top-left-radius: 10px;
      }

      .class2 {
      border-top-right-radius: 10px;
      }

      .class6 {
      border-bottom-right-radius: 10px;
      }

      .class5 {
      border-bottom-left-radius: 10px;
      }

      #toHide {
      background-color: black;
      height: 100%;
      width: 100%;
      position: absolute;
      }

      <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
      <div id="toHide">
      </div>
      <div id="wrapper">
      <div id="parentContainer" class="class1">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">Start Learning!</button>
      </div>
      </div>

      <div id="parentContainer" class="class2">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer" class="class5">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer" class="class6">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>
      </div>





      how can I do that with pure JS or CSS?










      share|improve this question
















      so I have a div that covers my whole web page. Beneath it I also have a set of divs. I want to be able to hide my div while scrolling down so my other divs beneath it can start appearing.



      the div for now is colored in black with an absolute position. I want this div to be the first page the user sees and then it starts hiding when the user scrolls down and the other divs beneath it to appear.



      Here is my html:






      body {
      margin: 0;
      border: 0;
      background-color: #201e2f;
      }

      p {
      text-align: justify;
      margin: 0;
      font-family: Ubuntu;
      text-transform: uppercase;
      text-indent: 30px;
      line-height: 1.5;
      font-size: 15px;
      }

      #parentContainer {
      background-color: #ffc107;
      height: 250px;
      width: 500px;
      float: left;
      }

      #courseImage {
      height: 100%;
      width: 30%;
      float: left;
      box-sizing: border-box;
      padding: 10px;
      }

      #courseDescription {
      height: 100%;
      width: 70%;
      float: right;
      box-sizing: border-box;
      padding-right: 10px;
      padding-left: 10px;
      padding-top: 10px;
      }

      button {
      height: 50px;
      width: 120px;
      background-color: #201e2f;
      margin: 15px;
      border: 0;
      color: #ffc107;
      border-radius: 5px;
      float: right;
      font-family: Ubuntu;
      font-size: 15px;
      }

      img {
      float: left;
      height: 100%;
      width: 100%;
      }

      #wrapper {
      display: grid;
      grid-gap: 20px 20px;
      grid-template-columns: 500px 500px;
      justify-content: center;
      }

      .class1 {
      border-top-left-radius: 10px;
      }

      .class2 {
      border-top-right-radius: 10px;
      }

      .class6 {
      border-bottom-right-radius: 10px;
      }

      .class5 {
      border-bottom-left-radius: 10px;
      }

      #toHide {
      background-color: black;
      height: 100%;
      width: 100%;
      position: absolute;
      }

      <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
      <div id="toHide">
      </div>
      <div id="wrapper">
      <div id="parentContainer" class="class1">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">Start Learning!</button>
      </div>
      </div>

      <div id="parentContainer" class="class2">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer" class="class5">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer" class="class6">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>
      </div>





      how can I do that with pure JS or CSS?






      body {
      margin: 0;
      border: 0;
      background-color: #201e2f;
      }

      p {
      text-align: justify;
      margin: 0;
      font-family: Ubuntu;
      text-transform: uppercase;
      text-indent: 30px;
      line-height: 1.5;
      font-size: 15px;
      }

      #parentContainer {
      background-color: #ffc107;
      height: 250px;
      width: 500px;
      float: left;
      }

      #courseImage {
      height: 100%;
      width: 30%;
      float: left;
      box-sizing: border-box;
      padding: 10px;
      }

      #courseDescription {
      height: 100%;
      width: 70%;
      float: right;
      box-sizing: border-box;
      padding-right: 10px;
      padding-left: 10px;
      padding-top: 10px;
      }

      button {
      height: 50px;
      width: 120px;
      background-color: #201e2f;
      margin: 15px;
      border: 0;
      color: #ffc107;
      border-radius: 5px;
      float: right;
      font-family: Ubuntu;
      font-size: 15px;
      }

      img {
      float: left;
      height: 100%;
      width: 100%;
      }

      #wrapper {
      display: grid;
      grid-gap: 20px 20px;
      grid-template-columns: 500px 500px;
      justify-content: center;
      }

      .class1 {
      border-top-left-radius: 10px;
      }

      .class2 {
      border-top-right-radius: 10px;
      }

      .class6 {
      border-bottom-right-radius: 10px;
      }

      .class5 {
      border-bottom-left-radius: 10px;
      }

      #toHide {
      background-color: black;
      height: 100%;
      width: 100%;
      position: absolute;
      }

      <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
      <div id="toHide">
      </div>
      <div id="wrapper">
      <div id="parentContainer" class="class1">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">Start Learning!</button>
      </div>
      </div>

      <div id="parentContainer" class="class2">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer" class="class5">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer" class="class6">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>
      </div>





      body {
      margin: 0;
      border: 0;
      background-color: #201e2f;
      }

      p {
      text-align: justify;
      margin: 0;
      font-family: Ubuntu;
      text-transform: uppercase;
      text-indent: 30px;
      line-height: 1.5;
      font-size: 15px;
      }

      #parentContainer {
      background-color: #ffc107;
      height: 250px;
      width: 500px;
      float: left;
      }

      #courseImage {
      height: 100%;
      width: 30%;
      float: left;
      box-sizing: border-box;
      padding: 10px;
      }

      #courseDescription {
      height: 100%;
      width: 70%;
      float: right;
      box-sizing: border-box;
      padding-right: 10px;
      padding-left: 10px;
      padding-top: 10px;
      }

      button {
      height: 50px;
      width: 120px;
      background-color: #201e2f;
      margin: 15px;
      border: 0;
      color: #ffc107;
      border-radius: 5px;
      float: right;
      font-family: Ubuntu;
      font-size: 15px;
      }

      img {
      float: left;
      height: 100%;
      width: 100%;
      }

      #wrapper {
      display: grid;
      grid-gap: 20px 20px;
      grid-template-columns: 500px 500px;
      justify-content: center;
      }

      .class1 {
      border-top-left-radius: 10px;
      }

      .class2 {
      border-top-right-radius: 10px;
      }

      .class6 {
      border-bottom-right-radius: 10px;
      }

      .class5 {
      border-bottom-left-radius: 10px;
      }

      #toHide {
      background-color: black;
      height: 100%;
      width: 100%;
      position: absolute;
      }

      <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
      <div id="toHide">
      </div>
      <div id="wrapper">
      <div id="parentContainer" class="class1">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">Start Learning!</button>
      </div>
      </div>

      <div id="parentContainer" class="class2">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer" class="class5">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>

      <div id="parentContainer" class="class6">
      <div id="courseImage">
      <img src="wd.png" alt="Sorry, couldn't load image">
      </div>

      <div id="courseDescription">
      <p>
      Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
      </p>

      <button id="startButton">
      Start Learning!
      </button>
      </div>
      </div>
      </div>






      javascript html css






      share|improve this question















      share|improve this question













      share|improve this question




      share|improve this question








      edited Nov 21 '18 at 15:50









      connexo

      22.8k83762




      22.8k83762










      asked Nov 21 '18 at 15:43









      Mustafa AnasMustafa Anas

      148




      148
























          3 Answers
          3






          active

          oldest

          votes


















          0














          I'd suggest applying a scroll listener putting a CSS class on your overlay div that causes a fade transition:






          document.addEventListener('scroll', () => { toHide.classList.add('hiddenByScroll')});

          body {
          margin: 0;
          border: 0;
          background-color: #201e2f;
          }

          p {
          text-align: justify;
          margin: 0;
          font-family: Ubuntu;
          text-transform: uppercase;
          text-indent: 30px;
          line-height: 1.5;
          font-size: 15px;
          }

          #parentContainer {
          background-color: #ffc107;
          height: 250px;
          width: 500px;
          float: left;
          }

          #courseImage {
          height: 100%;
          width: 30%;
          float: left;
          box-sizing: border-box;
          padding: 10px;
          }

          #courseDescription {
          height: 100%;
          width: 70%;
          float: right;
          box-sizing: border-box;
          padding-right: 10px;
          padding-left: 10px;
          padding-top: 10px;
          }

          button {
          height: 50px;
          width: 120px;
          background-color: #201e2f;
          margin: 15px;
          border: 0;
          color: #ffc107;
          border-radius: 5px;
          float: right;
          font-family: Ubuntu;
          font-size: 15px;
          }

          img {
          float: left;
          height: 100%;
          width: 100%;
          }

          #wrapper {
          display: grid;
          grid-gap: 20px 20px;
          grid-template-columns: 500px 500px;
          justify-content: center;
          }

          .class1 {
          border-top-left-radius: 10px;
          }

          .class2 {
          border-top-right-radius: 10px;
          }

          .class6 {
          border-bottom-right-radius: 10px;
          }

          .class5 {
          border-bottom-left-radius: 10px;
          }

          #toHide {
          background-color: black;
          height: 100%;
          width: 100%;
          position: absolute;
          transition: opacity .3s ease-in-out;
          opacity: 1;
          }

          #toHide.hiddenByScroll {
          opacity: 0;
          pointer-events: none;
          }

          <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
          <div id="toHide">
          </div>
          <div id="wrapper">
          <div id="parentContainer" class="class1">
          <div id="courseImage">
          <img src="wd.png" alt="Sorry, couldn't load image">
          </div>

          <div id="courseDescription">
          <p>
          Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
          </p>

          <button id="startButton">Start Learning!</button>
          </div>
          </div>

          <div id="parentContainer" class="class2">
          <div id="courseImage">
          <img src="wd.png" alt="Sorry, couldn't load image">
          </div>

          <div id="courseDescription">
          <p>
          Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
          </p>

          <button id="startButton">
          Start Learning!
          </button>
          </div>
          </div>

          <div id="parentContainer">
          <div id="courseImage">
          <img src="wd.png" alt="Sorry, couldn't load image">
          </div>

          <div id="courseDescription">
          <p>
          Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
          </p>

          <button id="startButton">
          Start Learning!
          </button>
          </div>
          </div>

          <div id="parentContainer">
          <div id="courseImage">
          <img src="wd.png" alt="Sorry, couldn't load image">
          </div>

          <div id="courseDescription">
          <p>
          Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
          </p>

          <button id="startButton">
          Start Learning!
          </button>
          </div>
          </div>

          <div id="parentContainer" class="class5">
          <div id="courseImage">
          <img src="wd.png" alt="Sorry, couldn't load image">
          </div>

          <div id="courseDescription">
          <p>
          Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
          </p>

          <button id="startButton">
          Start Learning!
          </button>
          </div>
          </div>

          <div id="parentContainer" class="class6">
          <div id="courseImage">
          <img src="wd.png" alt="Sorry, couldn't load image">
          </div>

          <div id="courseDescription">
          <p>
          Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
          </p>

          <button id="startButton">
          Start Learning!
          </button>
          </div>
          </div>
          </div>





          Make sure to also apply pointer-events: none;, otherwise the element will be invisible, but cannot be "clicked through" as it is still there.






          share|improve this answer































            0














            The easiest way would be to add this:



            <script>
            window.onscroll = function() {
            document.getElementById("toHide").style.display = "none";
            }
            </script>


            Here is a jsfiddle: https://jsfiddle.net/phv6Lfun/






            share|improve this answer































              0














              You can achieve what you want by modifying the opacity property of the div once the user begins to scroll. Also, here's a working example and a reference for onscroll :)




              // listen for a scroll event in the window containing the DOM
              window.onscroll = ()=>{
              // grab the div we want to hide
              let toHide = document.getElementById('toHide');
              // fade the div above out by setting its opacity to 0
              toHide.style.opacity = 0;
              }

              html {
              margin: 0;
              border: 0;
              background-color: #201e2f;
              }

              p {
              text-align: justify;
              margin: 0;
              font-family: Ubuntu;
              text-transform: uppercase;
              text-indent: 30px;
              line-height: 1.5;
              font-size: 15px;
              }

              #parentContainer {
              background-color: #ffc107;
              height: 250px;
              width: 500px;
              float: left;
              }

              #courseImage {
              height: 100%;
              width: 30%;
              float: left;
              box-sizing: border-box;
              padding: 10px;
              }

              #courseDescription {
              height: 100%;
              width: 70%;
              float: right;
              box-sizing: border-box;
              padding-right: 10px;
              padding-left: 10px;
              padding-top: 10px;
              }

              button {
              height: 50px;
              width: 120px;
              background-color: #201e2f;
              margin: 15px;
              border: 0;
              color: #ffc107;
              border-radius: 5px;
              float: right;
              font-family: Ubuntu;
              font-size: 15px;
              }

              img {
              float: left;
              height: 100%;
              width: 100%;
              }

              #wrapper {
              display: grid;
              grid-gap: 20px 20px;
              grid-template-columns: 500px 500px;
              justify-content: center;
              }

              .class1 {
              border-top-left-radius: 10px;
              }

              .class2 {
              border-top-right-radius: 10px;
              }

              .class6 {
              border-bottom-right-radius: 10px;
              }

              .class5 {
              border-bottom-left-radius: 10px;
              }

              #toHide {
              background-color: black;
              height: 100%;
              width: 100%;
              position: absolute;
              transition: opacity 500ms ease-in-out;
              }

              <html>

              <head>
              <link rel="stylesheet" href="index.css" type="text/css">
              <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
              </head>

              <body>
              <div id="toHide">
              </div>
              <div id="wrapper">
              <div id="parentContainer" class="class1">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>

              <div id="parentContainer" class="class2">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>

              <div id="parentContainer">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>

              <div id="parentContainer">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>

              <div id="parentContainer" class="class5">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>

              <div id="parentContainer" class="class6">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>
              </div>
              </body>

              </html>





              On the other hand, since you mentioned you want the div to be the first thing your users see when your page loads, you can do something like this so it'll reappear when the user scrolls back up to the top again:






              // listen for a scroll event in the window containing the DOM
              window.onscroll = ()=>{
              // grab the div we want to hide
              let toHide = document.getElementById('toHide');
              // fade the div above out by setting its opacity to 0
              // if the user scrolled down, scrollY will be greater than 0
              if(window.scrollY > 0){
              toHide.classList.add('hide');
              }
              else{
              toHide.classList.remove('hide');
              }
              }

              html {
              margin: 0;
              border: 0;
              background-color: #201e2f;
              }

              p {
              text-align: justify;
              margin: 0;
              font-family: Ubuntu;
              text-transform: uppercase;
              text-indent: 30px;
              line-height: 1.5;
              font-size: 15px;
              }

              #parentContainer {
              background-color: #ffc107;
              height: 250px;
              width: 500px;
              float: left;
              }

              #courseImage {
              height: 100%;
              width: 30%;
              float: left;
              box-sizing: border-box;
              padding: 10px;
              }

              #courseDescription {
              height: 100%;
              width: 70%;
              float: right;
              box-sizing: border-box;
              padding-right: 10px;
              padding-left: 10px;
              padding-top: 10px;
              }

              button {
              height: 50px;
              width: 120px;
              background-color: #201e2f;
              margin: 15px;
              border: 0;
              color: #ffc107;
              border-radius: 5px;
              float: right;
              font-family: Ubuntu;
              font-size: 15px;
              }

              img {
              float: left;
              height: 100%;
              width: 100%;
              }

              #wrapper {
              display: grid;
              grid-gap: 20px 20px;
              grid-template-columns: 500px 500px;
              justify-content: center;
              }

              .class1 {
              border-top-left-radius: 10px;
              }

              .class2 {
              border-top-right-radius: 10px;
              }

              .class6 {
              border-bottom-right-radius: 10px;
              }

              .class5 {
              border-bottom-left-radius: 10px;
              }

              #toHide {
              background-color: black;
              height: 100%;
              width: 100%;
              position: absolute;
              transition: opacity 500ms ease-in-out;
              }

              .hide {
              opacity: 0;
              }

              <html>

              <head>
              <link rel="stylesheet" href="index.css" type="text/css">
              <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
              </head>

              <body>
              <div id="toHide">
              </div>
              <div id="wrapper">
              <div id="parentContainer" class="class1">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>

              <div id="parentContainer" class="class2">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>

              <div id="parentContainer">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>

              <div id="parentContainer">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>

              <div id="parentContainer" class="class5">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>

              <div id="parentContainer" class="class6">
              <div id="courseImage">
              <img src="wd.png" alt="Sorry, couldn't load image">
              </div>

              <div id="courseDescription">
              <p>
              Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
              </p>

              <button id="startButton">
              Start Learning!
              </button>
              </div>
              </div>
              </div>
              </body>

              </html>





              Here's a working example for the snippet above and a reference to scrollY.



              The second example also makes use of a css class (.hide) instead of modifying the involved property using solely pure JS. The class is dynamically added and removed using the addClass and removeClass methods of the toHide div'sclassList property respectively.






              share|improve this answer

























                Your Answer






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                3 Answers
                3






                active

                oldest

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                0














                I'd suggest applying a scroll listener putting a CSS class on your overlay div that causes a fade transition:






                document.addEventListener('scroll', () => { toHide.classList.add('hiddenByScroll')});

                body {
                margin: 0;
                border: 0;
                background-color: #201e2f;
                }

                p {
                text-align: justify;
                margin: 0;
                font-family: Ubuntu;
                text-transform: uppercase;
                text-indent: 30px;
                line-height: 1.5;
                font-size: 15px;
                }

                #parentContainer {
                background-color: #ffc107;
                height: 250px;
                width: 500px;
                float: left;
                }

                #courseImage {
                height: 100%;
                width: 30%;
                float: left;
                box-sizing: border-box;
                padding: 10px;
                }

                #courseDescription {
                height: 100%;
                width: 70%;
                float: right;
                box-sizing: border-box;
                padding-right: 10px;
                padding-left: 10px;
                padding-top: 10px;
                }

                button {
                height: 50px;
                width: 120px;
                background-color: #201e2f;
                margin: 15px;
                border: 0;
                color: #ffc107;
                border-radius: 5px;
                float: right;
                font-family: Ubuntu;
                font-size: 15px;
                }

                img {
                float: left;
                height: 100%;
                width: 100%;
                }

                #wrapper {
                display: grid;
                grid-gap: 20px 20px;
                grid-template-columns: 500px 500px;
                justify-content: center;
                }

                .class1 {
                border-top-left-radius: 10px;
                }

                .class2 {
                border-top-right-radius: 10px;
                }

                .class6 {
                border-bottom-right-radius: 10px;
                }

                .class5 {
                border-bottom-left-radius: 10px;
                }

                #toHide {
                background-color: black;
                height: 100%;
                width: 100%;
                position: absolute;
                transition: opacity .3s ease-in-out;
                opacity: 1;
                }

                #toHide.hiddenByScroll {
                opacity: 0;
                pointer-events: none;
                }

                <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                <div id="toHide">
                </div>
                <div id="wrapper">
                <div id="parentContainer" class="class1">
                <div id="courseImage">
                <img src="wd.png" alt="Sorry, couldn't load image">
                </div>

                <div id="courseDescription">
                <p>
                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                </p>

                <button id="startButton">Start Learning!</button>
                </div>
                </div>

                <div id="parentContainer" class="class2">
                <div id="courseImage">
                <img src="wd.png" alt="Sorry, couldn't load image">
                </div>

                <div id="courseDescription">
                <p>
                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                </p>

                <button id="startButton">
                Start Learning!
                </button>
                </div>
                </div>

                <div id="parentContainer">
                <div id="courseImage">
                <img src="wd.png" alt="Sorry, couldn't load image">
                </div>

                <div id="courseDescription">
                <p>
                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                </p>

                <button id="startButton">
                Start Learning!
                </button>
                </div>
                </div>

                <div id="parentContainer">
                <div id="courseImage">
                <img src="wd.png" alt="Sorry, couldn't load image">
                </div>

                <div id="courseDescription">
                <p>
                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                </p>

                <button id="startButton">
                Start Learning!
                </button>
                </div>
                </div>

                <div id="parentContainer" class="class5">
                <div id="courseImage">
                <img src="wd.png" alt="Sorry, couldn't load image">
                </div>

                <div id="courseDescription">
                <p>
                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                </p>

                <button id="startButton">
                Start Learning!
                </button>
                </div>
                </div>

                <div id="parentContainer" class="class6">
                <div id="courseImage">
                <img src="wd.png" alt="Sorry, couldn't load image">
                </div>

                <div id="courseDescription">
                <p>
                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                </p>

                <button id="startButton">
                Start Learning!
                </button>
                </div>
                </div>
                </div>





                Make sure to also apply pointer-events: none;, otherwise the element will be invisible, but cannot be "clicked through" as it is still there.






                share|improve this answer




























                  0














                  I'd suggest applying a scroll listener putting a CSS class on your overlay div that causes a fade transition:






                  document.addEventListener('scroll', () => { toHide.classList.add('hiddenByScroll')});

                  body {
                  margin: 0;
                  border: 0;
                  background-color: #201e2f;
                  }

                  p {
                  text-align: justify;
                  margin: 0;
                  font-family: Ubuntu;
                  text-transform: uppercase;
                  text-indent: 30px;
                  line-height: 1.5;
                  font-size: 15px;
                  }

                  #parentContainer {
                  background-color: #ffc107;
                  height: 250px;
                  width: 500px;
                  float: left;
                  }

                  #courseImage {
                  height: 100%;
                  width: 30%;
                  float: left;
                  box-sizing: border-box;
                  padding: 10px;
                  }

                  #courseDescription {
                  height: 100%;
                  width: 70%;
                  float: right;
                  box-sizing: border-box;
                  padding-right: 10px;
                  padding-left: 10px;
                  padding-top: 10px;
                  }

                  button {
                  height: 50px;
                  width: 120px;
                  background-color: #201e2f;
                  margin: 15px;
                  border: 0;
                  color: #ffc107;
                  border-radius: 5px;
                  float: right;
                  font-family: Ubuntu;
                  font-size: 15px;
                  }

                  img {
                  float: left;
                  height: 100%;
                  width: 100%;
                  }

                  #wrapper {
                  display: grid;
                  grid-gap: 20px 20px;
                  grid-template-columns: 500px 500px;
                  justify-content: center;
                  }

                  .class1 {
                  border-top-left-radius: 10px;
                  }

                  .class2 {
                  border-top-right-radius: 10px;
                  }

                  .class6 {
                  border-bottom-right-radius: 10px;
                  }

                  .class5 {
                  border-bottom-left-radius: 10px;
                  }

                  #toHide {
                  background-color: black;
                  height: 100%;
                  width: 100%;
                  position: absolute;
                  transition: opacity .3s ease-in-out;
                  opacity: 1;
                  }

                  #toHide.hiddenByScroll {
                  opacity: 0;
                  pointer-events: none;
                  }

                  <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                  <div id="toHide">
                  </div>
                  <div id="wrapper">
                  <div id="parentContainer" class="class1">
                  <div id="courseImage">
                  <img src="wd.png" alt="Sorry, couldn't load image">
                  </div>

                  <div id="courseDescription">
                  <p>
                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                  </p>

                  <button id="startButton">Start Learning!</button>
                  </div>
                  </div>

                  <div id="parentContainer" class="class2">
                  <div id="courseImage">
                  <img src="wd.png" alt="Sorry, couldn't load image">
                  </div>

                  <div id="courseDescription">
                  <p>
                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                  </p>

                  <button id="startButton">
                  Start Learning!
                  </button>
                  </div>
                  </div>

                  <div id="parentContainer">
                  <div id="courseImage">
                  <img src="wd.png" alt="Sorry, couldn't load image">
                  </div>

                  <div id="courseDescription">
                  <p>
                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                  </p>

                  <button id="startButton">
                  Start Learning!
                  </button>
                  </div>
                  </div>

                  <div id="parentContainer">
                  <div id="courseImage">
                  <img src="wd.png" alt="Sorry, couldn't load image">
                  </div>

                  <div id="courseDescription">
                  <p>
                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                  </p>

                  <button id="startButton">
                  Start Learning!
                  </button>
                  </div>
                  </div>

                  <div id="parentContainer" class="class5">
                  <div id="courseImage">
                  <img src="wd.png" alt="Sorry, couldn't load image">
                  </div>

                  <div id="courseDescription">
                  <p>
                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                  </p>

                  <button id="startButton">
                  Start Learning!
                  </button>
                  </div>
                  </div>

                  <div id="parentContainer" class="class6">
                  <div id="courseImage">
                  <img src="wd.png" alt="Sorry, couldn't load image">
                  </div>

                  <div id="courseDescription">
                  <p>
                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                  </p>

                  <button id="startButton">
                  Start Learning!
                  </button>
                  </div>
                  </div>
                  </div>





                  Make sure to also apply pointer-events: none;, otherwise the element will be invisible, but cannot be "clicked through" as it is still there.






                  share|improve this answer


























                    0












                    0








                    0







                    I'd suggest applying a scroll listener putting a CSS class on your overlay div that causes a fade transition:






                    document.addEventListener('scroll', () => { toHide.classList.add('hiddenByScroll')});

                    body {
                    margin: 0;
                    border: 0;
                    background-color: #201e2f;
                    }

                    p {
                    text-align: justify;
                    margin: 0;
                    font-family: Ubuntu;
                    text-transform: uppercase;
                    text-indent: 30px;
                    line-height: 1.5;
                    font-size: 15px;
                    }

                    #parentContainer {
                    background-color: #ffc107;
                    height: 250px;
                    width: 500px;
                    float: left;
                    }

                    #courseImage {
                    height: 100%;
                    width: 30%;
                    float: left;
                    box-sizing: border-box;
                    padding: 10px;
                    }

                    #courseDescription {
                    height: 100%;
                    width: 70%;
                    float: right;
                    box-sizing: border-box;
                    padding-right: 10px;
                    padding-left: 10px;
                    padding-top: 10px;
                    }

                    button {
                    height: 50px;
                    width: 120px;
                    background-color: #201e2f;
                    margin: 15px;
                    border: 0;
                    color: #ffc107;
                    border-radius: 5px;
                    float: right;
                    font-family: Ubuntu;
                    font-size: 15px;
                    }

                    img {
                    float: left;
                    height: 100%;
                    width: 100%;
                    }

                    #wrapper {
                    display: grid;
                    grid-gap: 20px 20px;
                    grid-template-columns: 500px 500px;
                    justify-content: center;
                    }

                    .class1 {
                    border-top-left-radius: 10px;
                    }

                    .class2 {
                    border-top-right-radius: 10px;
                    }

                    .class6 {
                    border-bottom-right-radius: 10px;
                    }

                    .class5 {
                    border-bottom-left-radius: 10px;
                    }

                    #toHide {
                    background-color: black;
                    height: 100%;
                    width: 100%;
                    position: absolute;
                    transition: opacity .3s ease-in-out;
                    opacity: 1;
                    }

                    #toHide.hiddenByScroll {
                    opacity: 0;
                    pointer-events: none;
                    }

                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                    <div id="toHide">
                    </div>
                    <div id="wrapper">
                    <div id="parentContainer" class="class1">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">Start Learning!</button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class2">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class5">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class6">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>
                    </div>





                    Make sure to also apply pointer-events: none;, otherwise the element will be invisible, but cannot be "clicked through" as it is still there.






                    share|improve this answer













                    I'd suggest applying a scroll listener putting a CSS class on your overlay div that causes a fade transition:






                    document.addEventListener('scroll', () => { toHide.classList.add('hiddenByScroll')});

                    body {
                    margin: 0;
                    border: 0;
                    background-color: #201e2f;
                    }

                    p {
                    text-align: justify;
                    margin: 0;
                    font-family: Ubuntu;
                    text-transform: uppercase;
                    text-indent: 30px;
                    line-height: 1.5;
                    font-size: 15px;
                    }

                    #parentContainer {
                    background-color: #ffc107;
                    height: 250px;
                    width: 500px;
                    float: left;
                    }

                    #courseImage {
                    height: 100%;
                    width: 30%;
                    float: left;
                    box-sizing: border-box;
                    padding: 10px;
                    }

                    #courseDescription {
                    height: 100%;
                    width: 70%;
                    float: right;
                    box-sizing: border-box;
                    padding-right: 10px;
                    padding-left: 10px;
                    padding-top: 10px;
                    }

                    button {
                    height: 50px;
                    width: 120px;
                    background-color: #201e2f;
                    margin: 15px;
                    border: 0;
                    color: #ffc107;
                    border-radius: 5px;
                    float: right;
                    font-family: Ubuntu;
                    font-size: 15px;
                    }

                    img {
                    float: left;
                    height: 100%;
                    width: 100%;
                    }

                    #wrapper {
                    display: grid;
                    grid-gap: 20px 20px;
                    grid-template-columns: 500px 500px;
                    justify-content: center;
                    }

                    .class1 {
                    border-top-left-radius: 10px;
                    }

                    .class2 {
                    border-top-right-radius: 10px;
                    }

                    .class6 {
                    border-bottom-right-radius: 10px;
                    }

                    .class5 {
                    border-bottom-left-radius: 10px;
                    }

                    #toHide {
                    background-color: black;
                    height: 100%;
                    width: 100%;
                    position: absolute;
                    transition: opacity .3s ease-in-out;
                    opacity: 1;
                    }

                    #toHide.hiddenByScroll {
                    opacity: 0;
                    pointer-events: none;
                    }

                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                    <div id="toHide">
                    </div>
                    <div id="wrapper">
                    <div id="parentContainer" class="class1">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">Start Learning!</button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class2">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class5">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class6">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>
                    </div>





                    Make sure to also apply pointer-events: none;, otherwise the element will be invisible, but cannot be "clicked through" as it is still there.






                    document.addEventListener('scroll', () => { toHide.classList.add('hiddenByScroll')});

                    body {
                    margin: 0;
                    border: 0;
                    background-color: #201e2f;
                    }

                    p {
                    text-align: justify;
                    margin: 0;
                    font-family: Ubuntu;
                    text-transform: uppercase;
                    text-indent: 30px;
                    line-height: 1.5;
                    font-size: 15px;
                    }

                    #parentContainer {
                    background-color: #ffc107;
                    height: 250px;
                    width: 500px;
                    float: left;
                    }

                    #courseImage {
                    height: 100%;
                    width: 30%;
                    float: left;
                    box-sizing: border-box;
                    padding: 10px;
                    }

                    #courseDescription {
                    height: 100%;
                    width: 70%;
                    float: right;
                    box-sizing: border-box;
                    padding-right: 10px;
                    padding-left: 10px;
                    padding-top: 10px;
                    }

                    button {
                    height: 50px;
                    width: 120px;
                    background-color: #201e2f;
                    margin: 15px;
                    border: 0;
                    color: #ffc107;
                    border-radius: 5px;
                    float: right;
                    font-family: Ubuntu;
                    font-size: 15px;
                    }

                    img {
                    float: left;
                    height: 100%;
                    width: 100%;
                    }

                    #wrapper {
                    display: grid;
                    grid-gap: 20px 20px;
                    grid-template-columns: 500px 500px;
                    justify-content: center;
                    }

                    .class1 {
                    border-top-left-radius: 10px;
                    }

                    .class2 {
                    border-top-right-radius: 10px;
                    }

                    .class6 {
                    border-bottom-right-radius: 10px;
                    }

                    .class5 {
                    border-bottom-left-radius: 10px;
                    }

                    #toHide {
                    background-color: black;
                    height: 100%;
                    width: 100%;
                    position: absolute;
                    transition: opacity .3s ease-in-out;
                    opacity: 1;
                    }

                    #toHide.hiddenByScroll {
                    opacity: 0;
                    pointer-events: none;
                    }

                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                    <div id="toHide">
                    </div>
                    <div id="wrapper">
                    <div id="parentContainer" class="class1">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">Start Learning!</button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class2">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class5">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class6">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>
                    </div>





                    document.addEventListener('scroll', () => { toHide.classList.add('hiddenByScroll')});

                    body {
                    margin: 0;
                    border: 0;
                    background-color: #201e2f;
                    }

                    p {
                    text-align: justify;
                    margin: 0;
                    font-family: Ubuntu;
                    text-transform: uppercase;
                    text-indent: 30px;
                    line-height: 1.5;
                    font-size: 15px;
                    }

                    #parentContainer {
                    background-color: #ffc107;
                    height: 250px;
                    width: 500px;
                    float: left;
                    }

                    #courseImage {
                    height: 100%;
                    width: 30%;
                    float: left;
                    box-sizing: border-box;
                    padding: 10px;
                    }

                    #courseDescription {
                    height: 100%;
                    width: 70%;
                    float: right;
                    box-sizing: border-box;
                    padding-right: 10px;
                    padding-left: 10px;
                    padding-top: 10px;
                    }

                    button {
                    height: 50px;
                    width: 120px;
                    background-color: #201e2f;
                    margin: 15px;
                    border: 0;
                    color: #ffc107;
                    border-radius: 5px;
                    float: right;
                    font-family: Ubuntu;
                    font-size: 15px;
                    }

                    img {
                    float: left;
                    height: 100%;
                    width: 100%;
                    }

                    #wrapper {
                    display: grid;
                    grid-gap: 20px 20px;
                    grid-template-columns: 500px 500px;
                    justify-content: center;
                    }

                    .class1 {
                    border-top-left-radius: 10px;
                    }

                    .class2 {
                    border-top-right-radius: 10px;
                    }

                    .class6 {
                    border-bottom-right-radius: 10px;
                    }

                    .class5 {
                    border-bottom-left-radius: 10px;
                    }

                    #toHide {
                    background-color: black;
                    height: 100%;
                    width: 100%;
                    position: absolute;
                    transition: opacity .3s ease-in-out;
                    opacity: 1;
                    }

                    #toHide.hiddenByScroll {
                    opacity: 0;
                    pointer-events: none;
                    }

                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                    <div id="toHide">
                    </div>
                    <div id="wrapper">
                    <div id="parentContainer" class="class1">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">Start Learning!</button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class2">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class5">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>

                    <div id="parentContainer" class="class6">
                    <div id="courseImage">
                    <img src="wd.png" alt="Sorry, couldn't load image">
                    </div>

                    <div id="courseDescription">
                    <p>
                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                    </p>

                    <button id="startButton">
                    Start Learning!
                    </button>
                    </div>
                    </div>
                    </div>






                    share|improve this answer












                    share|improve this answer



                    share|improve this answer










                    answered Nov 21 '18 at 15:54









                    connexoconnexo

                    22.8k83762




                    22.8k83762

























                        0














                        The easiest way would be to add this:



                        <script>
                        window.onscroll = function() {
                        document.getElementById("toHide").style.display = "none";
                        }
                        </script>


                        Here is a jsfiddle: https://jsfiddle.net/phv6Lfun/






                        share|improve this answer




























                          0














                          The easiest way would be to add this:



                          <script>
                          window.onscroll = function() {
                          document.getElementById("toHide").style.display = "none";
                          }
                          </script>


                          Here is a jsfiddle: https://jsfiddle.net/phv6Lfun/






                          share|improve this answer


























                            0












                            0








                            0







                            The easiest way would be to add this:



                            <script>
                            window.onscroll = function() {
                            document.getElementById("toHide").style.display = "none";
                            }
                            </script>


                            Here is a jsfiddle: https://jsfiddle.net/phv6Lfun/






                            share|improve this answer













                            The easiest way would be to add this:



                            <script>
                            window.onscroll = function() {
                            document.getElementById("toHide").style.display = "none";
                            }
                            </script>


                            Here is a jsfiddle: https://jsfiddle.net/phv6Lfun/







                            share|improve this answer












                            share|improve this answer



                            share|improve this answer










                            answered Nov 21 '18 at 16:03









                            digijaydigijay

                            6061916




                            6061916























                                0














                                You can achieve what you want by modifying the opacity property of the div once the user begins to scroll. Also, here's a working example and a reference for onscroll :)




                                // listen for a scroll event in the window containing the DOM
                                window.onscroll = ()=>{
                                // grab the div we want to hide
                                let toHide = document.getElementById('toHide');
                                // fade the div above out by setting its opacity to 0
                                toHide.style.opacity = 0;
                                }

                                html {
                                margin: 0;
                                border: 0;
                                background-color: #201e2f;
                                }

                                p {
                                text-align: justify;
                                margin: 0;
                                font-family: Ubuntu;
                                text-transform: uppercase;
                                text-indent: 30px;
                                line-height: 1.5;
                                font-size: 15px;
                                }

                                #parentContainer {
                                background-color: #ffc107;
                                height: 250px;
                                width: 500px;
                                float: left;
                                }

                                #courseImage {
                                height: 100%;
                                width: 30%;
                                float: left;
                                box-sizing: border-box;
                                padding: 10px;
                                }

                                #courseDescription {
                                height: 100%;
                                width: 70%;
                                float: right;
                                box-sizing: border-box;
                                padding-right: 10px;
                                padding-left: 10px;
                                padding-top: 10px;
                                }

                                button {
                                height: 50px;
                                width: 120px;
                                background-color: #201e2f;
                                margin: 15px;
                                border: 0;
                                color: #ffc107;
                                border-radius: 5px;
                                float: right;
                                font-family: Ubuntu;
                                font-size: 15px;
                                }

                                img {
                                float: left;
                                height: 100%;
                                width: 100%;
                                }

                                #wrapper {
                                display: grid;
                                grid-gap: 20px 20px;
                                grid-template-columns: 500px 500px;
                                justify-content: center;
                                }

                                .class1 {
                                border-top-left-radius: 10px;
                                }

                                .class2 {
                                border-top-right-radius: 10px;
                                }

                                .class6 {
                                border-bottom-right-radius: 10px;
                                }

                                .class5 {
                                border-bottom-left-radius: 10px;
                                }

                                #toHide {
                                background-color: black;
                                height: 100%;
                                width: 100%;
                                position: absolute;
                                transition: opacity 500ms ease-in-out;
                                }

                                <html>

                                <head>
                                <link rel="stylesheet" href="index.css" type="text/css">
                                <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                </head>

                                <body>
                                <div id="toHide">
                                </div>
                                <div id="wrapper">
                                <div id="parentContainer" class="class1">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>

                                <div id="parentContainer" class="class2">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>

                                <div id="parentContainer">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>

                                <div id="parentContainer">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>

                                <div id="parentContainer" class="class5">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>

                                <div id="parentContainer" class="class6">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>
                                </div>
                                </body>

                                </html>





                                On the other hand, since you mentioned you want the div to be the first thing your users see when your page loads, you can do something like this so it'll reappear when the user scrolls back up to the top again:






                                // listen for a scroll event in the window containing the DOM
                                window.onscroll = ()=>{
                                // grab the div we want to hide
                                let toHide = document.getElementById('toHide');
                                // fade the div above out by setting its opacity to 0
                                // if the user scrolled down, scrollY will be greater than 0
                                if(window.scrollY > 0){
                                toHide.classList.add('hide');
                                }
                                else{
                                toHide.classList.remove('hide');
                                }
                                }

                                html {
                                margin: 0;
                                border: 0;
                                background-color: #201e2f;
                                }

                                p {
                                text-align: justify;
                                margin: 0;
                                font-family: Ubuntu;
                                text-transform: uppercase;
                                text-indent: 30px;
                                line-height: 1.5;
                                font-size: 15px;
                                }

                                #parentContainer {
                                background-color: #ffc107;
                                height: 250px;
                                width: 500px;
                                float: left;
                                }

                                #courseImage {
                                height: 100%;
                                width: 30%;
                                float: left;
                                box-sizing: border-box;
                                padding: 10px;
                                }

                                #courseDescription {
                                height: 100%;
                                width: 70%;
                                float: right;
                                box-sizing: border-box;
                                padding-right: 10px;
                                padding-left: 10px;
                                padding-top: 10px;
                                }

                                button {
                                height: 50px;
                                width: 120px;
                                background-color: #201e2f;
                                margin: 15px;
                                border: 0;
                                color: #ffc107;
                                border-radius: 5px;
                                float: right;
                                font-family: Ubuntu;
                                font-size: 15px;
                                }

                                img {
                                float: left;
                                height: 100%;
                                width: 100%;
                                }

                                #wrapper {
                                display: grid;
                                grid-gap: 20px 20px;
                                grid-template-columns: 500px 500px;
                                justify-content: center;
                                }

                                .class1 {
                                border-top-left-radius: 10px;
                                }

                                .class2 {
                                border-top-right-radius: 10px;
                                }

                                .class6 {
                                border-bottom-right-radius: 10px;
                                }

                                .class5 {
                                border-bottom-left-radius: 10px;
                                }

                                #toHide {
                                background-color: black;
                                height: 100%;
                                width: 100%;
                                position: absolute;
                                transition: opacity 500ms ease-in-out;
                                }

                                .hide {
                                opacity: 0;
                                }

                                <html>

                                <head>
                                <link rel="stylesheet" href="index.css" type="text/css">
                                <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                </head>

                                <body>
                                <div id="toHide">
                                </div>
                                <div id="wrapper">
                                <div id="parentContainer" class="class1">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>

                                <div id="parentContainer" class="class2">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>

                                <div id="parentContainer">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>

                                <div id="parentContainer">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>

                                <div id="parentContainer" class="class5">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>

                                <div id="parentContainer" class="class6">
                                <div id="courseImage">
                                <img src="wd.png" alt="Sorry, couldn't load image">
                                </div>

                                <div id="courseDescription">
                                <p>
                                Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                </p>

                                <button id="startButton">
                                Start Learning!
                                </button>
                                </div>
                                </div>
                                </div>
                                </body>

                                </html>





                                Here's a working example for the snippet above and a reference to scrollY.



                                The second example also makes use of a css class (.hide) instead of modifying the involved property using solely pure JS. The class is dynamically added and removed using the addClass and removeClass methods of the toHide div'sclassList property respectively.






                                share|improve this answer






























                                  0














                                  You can achieve what you want by modifying the opacity property of the div once the user begins to scroll. Also, here's a working example and a reference for onscroll :)




                                  // listen for a scroll event in the window containing the DOM
                                  window.onscroll = ()=>{
                                  // grab the div we want to hide
                                  let toHide = document.getElementById('toHide');
                                  // fade the div above out by setting its opacity to 0
                                  toHide.style.opacity = 0;
                                  }

                                  html {
                                  margin: 0;
                                  border: 0;
                                  background-color: #201e2f;
                                  }

                                  p {
                                  text-align: justify;
                                  margin: 0;
                                  font-family: Ubuntu;
                                  text-transform: uppercase;
                                  text-indent: 30px;
                                  line-height: 1.5;
                                  font-size: 15px;
                                  }

                                  #parentContainer {
                                  background-color: #ffc107;
                                  height: 250px;
                                  width: 500px;
                                  float: left;
                                  }

                                  #courseImage {
                                  height: 100%;
                                  width: 30%;
                                  float: left;
                                  box-sizing: border-box;
                                  padding: 10px;
                                  }

                                  #courseDescription {
                                  height: 100%;
                                  width: 70%;
                                  float: right;
                                  box-sizing: border-box;
                                  padding-right: 10px;
                                  padding-left: 10px;
                                  padding-top: 10px;
                                  }

                                  button {
                                  height: 50px;
                                  width: 120px;
                                  background-color: #201e2f;
                                  margin: 15px;
                                  border: 0;
                                  color: #ffc107;
                                  border-radius: 5px;
                                  float: right;
                                  font-family: Ubuntu;
                                  font-size: 15px;
                                  }

                                  img {
                                  float: left;
                                  height: 100%;
                                  width: 100%;
                                  }

                                  #wrapper {
                                  display: grid;
                                  grid-gap: 20px 20px;
                                  grid-template-columns: 500px 500px;
                                  justify-content: center;
                                  }

                                  .class1 {
                                  border-top-left-radius: 10px;
                                  }

                                  .class2 {
                                  border-top-right-radius: 10px;
                                  }

                                  .class6 {
                                  border-bottom-right-radius: 10px;
                                  }

                                  .class5 {
                                  border-bottom-left-radius: 10px;
                                  }

                                  #toHide {
                                  background-color: black;
                                  height: 100%;
                                  width: 100%;
                                  position: absolute;
                                  transition: opacity 500ms ease-in-out;
                                  }

                                  <html>

                                  <head>
                                  <link rel="stylesheet" href="index.css" type="text/css">
                                  <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                  </head>

                                  <body>
                                  <div id="toHide">
                                  </div>
                                  <div id="wrapper">
                                  <div id="parentContainer" class="class1">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>

                                  <div id="parentContainer" class="class2">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>

                                  <div id="parentContainer">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>

                                  <div id="parentContainer">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>

                                  <div id="parentContainer" class="class5">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>

                                  <div id="parentContainer" class="class6">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>
                                  </div>
                                  </body>

                                  </html>





                                  On the other hand, since you mentioned you want the div to be the first thing your users see when your page loads, you can do something like this so it'll reappear when the user scrolls back up to the top again:






                                  // listen for a scroll event in the window containing the DOM
                                  window.onscroll = ()=>{
                                  // grab the div we want to hide
                                  let toHide = document.getElementById('toHide');
                                  // fade the div above out by setting its opacity to 0
                                  // if the user scrolled down, scrollY will be greater than 0
                                  if(window.scrollY > 0){
                                  toHide.classList.add('hide');
                                  }
                                  else{
                                  toHide.classList.remove('hide');
                                  }
                                  }

                                  html {
                                  margin: 0;
                                  border: 0;
                                  background-color: #201e2f;
                                  }

                                  p {
                                  text-align: justify;
                                  margin: 0;
                                  font-family: Ubuntu;
                                  text-transform: uppercase;
                                  text-indent: 30px;
                                  line-height: 1.5;
                                  font-size: 15px;
                                  }

                                  #parentContainer {
                                  background-color: #ffc107;
                                  height: 250px;
                                  width: 500px;
                                  float: left;
                                  }

                                  #courseImage {
                                  height: 100%;
                                  width: 30%;
                                  float: left;
                                  box-sizing: border-box;
                                  padding: 10px;
                                  }

                                  #courseDescription {
                                  height: 100%;
                                  width: 70%;
                                  float: right;
                                  box-sizing: border-box;
                                  padding-right: 10px;
                                  padding-left: 10px;
                                  padding-top: 10px;
                                  }

                                  button {
                                  height: 50px;
                                  width: 120px;
                                  background-color: #201e2f;
                                  margin: 15px;
                                  border: 0;
                                  color: #ffc107;
                                  border-radius: 5px;
                                  float: right;
                                  font-family: Ubuntu;
                                  font-size: 15px;
                                  }

                                  img {
                                  float: left;
                                  height: 100%;
                                  width: 100%;
                                  }

                                  #wrapper {
                                  display: grid;
                                  grid-gap: 20px 20px;
                                  grid-template-columns: 500px 500px;
                                  justify-content: center;
                                  }

                                  .class1 {
                                  border-top-left-radius: 10px;
                                  }

                                  .class2 {
                                  border-top-right-radius: 10px;
                                  }

                                  .class6 {
                                  border-bottom-right-radius: 10px;
                                  }

                                  .class5 {
                                  border-bottom-left-radius: 10px;
                                  }

                                  #toHide {
                                  background-color: black;
                                  height: 100%;
                                  width: 100%;
                                  position: absolute;
                                  transition: opacity 500ms ease-in-out;
                                  }

                                  .hide {
                                  opacity: 0;
                                  }

                                  <html>

                                  <head>
                                  <link rel="stylesheet" href="index.css" type="text/css">
                                  <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                  </head>

                                  <body>
                                  <div id="toHide">
                                  </div>
                                  <div id="wrapper">
                                  <div id="parentContainer" class="class1">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>

                                  <div id="parentContainer" class="class2">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>

                                  <div id="parentContainer">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>

                                  <div id="parentContainer">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>

                                  <div id="parentContainer" class="class5">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>

                                  <div id="parentContainer" class="class6">
                                  <div id="courseImage">
                                  <img src="wd.png" alt="Sorry, couldn't load image">
                                  </div>

                                  <div id="courseDescription">
                                  <p>
                                  Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                  </p>

                                  <button id="startButton">
                                  Start Learning!
                                  </button>
                                  </div>
                                  </div>
                                  </div>
                                  </body>

                                  </html>





                                  Here's a working example for the snippet above and a reference to scrollY.



                                  The second example also makes use of a css class (.hide) instead of modifying the involved property using solely pure JS. The class is dynamically added and removed using the addClass and removeClass methods of the toHide div'sclassList property respectively.






                                  share|improve this answer




























                                    0












                                    0








                                    0







                                    You can achieve what you want by modifying the opacity property of the div once the user begins to scroll. Also, here's a working example and a reference for onscroll :)




                                    // listen for a scroll event in the window containing the DOM
                                    window.onscroll = ()=>{
                                    // grab the div we want to hide
                                    let toHide = document.getElementById('toHide');
                                    // fade the div above out by setting its opacity to 0
                                    toHide.style.opacity = 0;
                                    }

                                    html {
                                    margin: 0;
                                    border: 0;
                                    background-color: #201e2f;
                                    }

                                    p {
                                    text-align: justify;
                                    margin: 0;
                                    font-family: Ubuntu;
                                    text-transform: uppercase;
                                    text-indent: 30px;
                                    line-height: 1.5;
                                    font-size: 15px;
                                    }

                                    #parentContainer {
                                    background-color: #ffc107;
                                    height: 250px;
                                    width: 500px;
                                    float: left;
                                    }

                                    #courseImage {
                                    height: 100%;
                                    width: 30%;
                                    float: left;
                                    box-sizing: border-box;
                                    padding: 10px;
                                    }

                                    #courseDescription {
                                    height: 100%;
                                    width: 70%;
                                    float: right;
                                    box-sizing: border-box;
                                    padding-right: 10px;
                                    padding-left: 10px;
                                    padding-top: 10px;
                                    }

                                    button {
                                    height: 50px;
                                    width: 120px;
                                    background-color: #201e2f;
                                    margin: 15px;
                                    border: 0;
                                    color: #ffc107;
                                    border-radius: 5px;
                                    float: right;
                                    font-family: Ubuntu;
                                    font-size: 15px;
                                    }

                                    img {
                                    float: left;
                                    height: 100%;
                                    width: 100%;
                                    }

                                    #wrapper {
                                    display: grid;
                                    grid-gap: 20px 20px;
                                    grid-template-columns: 500px 500px;
                                    justify-content: center;
                                    }

                                    .class1 {
                                    border-top-left-radius: 10px;
                                    }

                                    .class2 {
                                    border-top-right-radius: 10px;
                                    }

                                    .class6 {
                                    border-bottom-right-radius: 10px;
                                    }

                                    .class5 {
                                    border-bottom-left-radius: 10px;
                                    }

                                    #toHide {
                                    background-color: black;
                                    height: 100%;
                                    width: 100%;
                                    position: absolute;
                                    transition: opacity 500ms ease-in-out;
                                    }

                                    <html>

                                    <head>
                                    <link rel="stylesheet" href="index.css" type="text/css">
                                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                    </head>

                                    <body>
                                    <div id="toHide">
                                    </div>
                                    <div id="wrapper">
                                    <div id="parentContainer" class="class1">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class2">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class5">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class6">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>
                                    </div>
                                    </body>

                                    </html>





                                    On the other hand, since you mentioned you want the div to be the first thing your users see when your page loads, you can do something like this so it'll reappear when the user scrolls back up to the top again:






                                    // listen for a scroll event in the window containing the DOM
                                    window.onscroll = ()=>{
                                    // grab the div we want to hide
                                    let toHide = document.getElementById('toHide');
                                    // fade the div above out by setting its opacity to 0
                                    // if the user scrolled down, scrollY will be greater than 0
                                    if(window.scrollY > 0){
                                    toHide.classList.add('hide');
                                    }
                                    else{
                                    toHide.classList.remove('hide');
                                    }
                                    }

                                    html {
                                    margin: 0;
                                    border: 0;
                                    background-color: #201e2f;
                                    }

                                    p {
                                    text-align: justify;
                                    margin: 0;
                                    font-family: Ubuntu;
                                    text-transform: uppercase;
                                    text-indent: 30px;
                                    line-height: 1.5;
                                    font-size: 15px;
                                    }

                                    #parentContainer {
                                    background-color: #ffc107;
                                    height: 250px;
                                    width: 500px;
                                    float: left;
                                    }

                                    #courseImage {
                                    height: 100%;
                                    width: 30%;
                                    float: left;
                                    box-sizing: border-box;
                                    padding: 10px;
                                    }

                                    #courseDescription {
                                    height: 100%;
                                    width: 70%;
                                    float: right;
                                    box-sizing: border-box;
                                    padding-right: 10px;
                                    padding-left: 10px;
                                    padding-top: 10px;
                                    }

                                    button {
                                    height: 50px;
                                    width: 120px;
                                    background-color: #201e2f;
                                    margin: 15px;
                                    border: 0;
                                    color: #ffc107;
                                    border-radius: 5px;
                                    float: right;
                                    font-family: Ubuntu;
                                    font-size: 15px;
                                    }

                                    img {
                                    float: left;
                                    height: 100%;
                                    width: 100%;
                                    }

                                    #wrapper {
                                    display: grid;
                                    grid-gap: 20px 20px;
                                    grid-template-columns: 500px 500px;
                                    justify-content: center;
                                    }

                                    .class1 {
                                    border-top-left-radius: 10px;
                                    }

                                    .class2 {
                                    border-top-right-radius: 10px;
                                    }

                                    .class6 {
                                    border-bottom-right-radius: 10px;
                                    }

                                    .class5 {
                                    border-bottom-left-radius: 10px;
                                    }

                                    #toHide {
                                    background-color: black;
                                    height: 100%;
                                    width: 100%;
                                    position: absolute;
                                    transition: opacity 500ms ease-in-out;
                                    }

                                    .hide {
                                    opacity: 0;
                                    }

                                    <html>

                                    <head>
                                    <link rel="stylesheet" href="index.css" type="text/css">
                                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                    </head>

                                    <body>
                                    <div id="toHide">
                                    </div>
                                    <div id="wrapper">
                                    <div id="parentContainer" class="class1">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class2">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class5">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class6">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>
                                    </div>
                                    </body>

                                    </html>





                                    Here's a working example for the snippet above and a reference to scrollY.



                                    The second example also makes use of a css class (.hide) instead of modifying the involved property using solely pure JS. The class is dynamically added and removed using the addClass and removeClass methods of the toHide div'sclassList property respectively.






                                    share|improve this answer















                                    You can achieve what you want by modifying the opacity property of the div once the user begins to scroll. Also, here's a working example and a reference for onscroll :)




                                    // listen for a scroll event in the window containing the DOM
                                    window.onscroll = ()=>{
                                    // grab the div we want to hide
                                    let toHide = document.getElementById('toHide');
                                    // fade the div above out by setting its opacity to 0
                                    toHide.style.opacity = 0;
                                    }

                                    html {
                                    margin: 0;
                                    border: 0;
                                    background-color: #201e2f;
                                    }

                                    p {
                                    text-align: justify;
                                    margin: 0;
                                    font-family: Ubuntu;
                                    text-transform: uppercase;
                                    text-indent: 30px;
                                    line-height: 1.5;
                                    font-size: 15px;
                                    }

                                    #parentContainer {
                                    background-color: #ffc107;
                                    height: 250px;
                                    width: 500px;
                                    float: left;
                                    }

                                    #courseImage {
                                    height: 100%;
                                    width: 30%;
                                    float: left;
                                    box-sizing: border-box;
                                    padding: 10px;
                                    }

                                    #courseDescription {
                                    height: 100%;
                                    width: 70%;
                                    float: right;
                                    box-sizing: border-box;
                                    padding-right: 10px;
                                    padding-left: 10px;
                                    padding-top: 10px;
                                    }

                                    button {
                                    height: 50px;
                                    width: 120px;
                                    background-color: #201e2f;
                                    margin: 15px;
                                    border: 0;
                                    color: #ffc107;
                                    border-radius: 5px;
                                    float: right;
                                    font-family: Ubuntu;
                                    font-size: 15px;
                                    }

                                    img {
                                    float: left;
                                    height: 100%;
                                    width: 100%;
                                    }

                                    #wrapper {
                                    display: grid;
                                    grid-gap: 20px 20px;
                                    grid-template-columns: 500px 500px;
                                    justify-content: center;
                                    }

                                    .class1 {
                                    border-top-left-radius: 10px;
                                    }

                                    .class2 {
                                    border-top-right-radius: 10px;
                                    }

                                    .class6 {
                                    border-bottom-right-radius: 10px;
                                    }

                                    .class5 {
                                    border-bottom-left-radius: 10px;
                                    }

                                    #toHide {
                                    background-color: black;
                                    height: 100%;
                                    width: 100%;
                                    position: absolute;
                                    transition: opacity 500ms ease-in-out;
                                    }

                                    <html>

                                    <head>
                                    <link rel="stylesheet" href="index.css" type="text/css">
                                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                    </head>

                                    <body>
                                    <div id="toHide">
                                    </div>
                                    <div id="wrapper">
                                    <div id="parentContainer" class="class1">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class2">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class5">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class6">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>
                                    </div>
                                    </body>

                                    </html>





                                    On the other hand, since you mentioned you want the div to be the first thing your users see when your page loads, you can do something like this so it'll reappear when the user scrolls back up to the top again:






                                    // listen for a scroll event in the window containing the DOM
                                    window.onscroll = ()=>{
                                    // grab the div we want to hide
                                    let toHide = document.getElementById('toHide');
                                    // fade the div above out by setting its opacity to 0
                                    // if the user scrolled down, scrollY will be greater than 0
                                    if(window.scrollY > 0){
                                    toHide.classList.add('hide');
                                    }
                                    else{
                                    toHide.classList.remove('hide');
                                    }
                                    }

                                    html {
                                    margin: 0;
                                    border: 0;
                                    background-color: #201e2f;
                                    }

                                    p {
                                    text-align: justify;
                                    margin: 0;
                                    font-family: Ubuntu;
                                    text-transform: uppercase;
                                    text-indent: 30px;
                                    line-height: 1.5;
                                    font-size: 15px;
                                    }

                                    #parentContainer {
                                    background-color: #ffc107;
                                    height: 250px;
                                    width: 500px;
                                    float: left;
                                    }

                                    #courseImage {
                                    height: 100%;
                                    width: 30%;
                                    float: left;
                                    box-sizing: border-box;
                                    padding: 10px;
                                    }

                                    #courseDescription {
                                    height: 100%;
                                    width: 70%;
                                    float: right;
                                    box-sizing: border-box;
                                    padding-right: 10px;
                                    padding-left: 10px;
                                    padding-top: 10px;
                                    }

                                    button {
                                    height: 50px;
                                    width: 120px;
                                    background-color: #201e2f;
                                    margin: 15px;
                                    border: 0;
                                    color: #ffc107;
                                    border-radius: 5px;
                                    float: right;
                                    font-family: Ubuntu;
                                    font-size: 15px;
                                    }

                                    img {
                                    float: left;
                                    height: 100%;
                                    width: 100%;
                                    }

                                    #wrapper {
                                    display: grid;
                                    grid-gap: 20px 20px;
                                    grid-template-columns: 500px 500px;
                                    justify-content: center;
                                    }

                                    .class1 {
                                    border-top-left-radius: 10px;
                                    }

                                    .class2 {
                                    border-top-right-radius: 10px;
                                    }

                                    .class6 {
                                    border-bottom-right-radius: 10px;
                                    }

                                    .class5 {
                                    border-bottom-left-radius: 10px;
                                    }

                                    #toHide {
                                    background-color: black;
                                    height: 100%;
                                    width: 100%;
                                    position: absolute;
                                    transition: opacity 500ms ease-in-out;
                                    }

                                    .hide {
                                    opacity: 0;
                                    }

                                    <html>

                                    <head>
                                    <link rel="stylesheet" href="index.css" type="text/css">
                                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                    </head>

                                    <body>
                                    <div id="toHide">
                                    </div>
                                    <div id="wrapper">
                                    <div id="parentContainer" class="class1">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class2">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class5">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class6">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>
                                    </div>
                                    </body>

                                    </html>





                                    Here's a working example for the snippet above and a reference to scrollY.



                                    The second example also makes use of a css class (.hide) instead of modifying the involved property using solely pure JS. The class is dynamically added and removed using the addClass and removeClass methods of the toHide div'sclassList property respectively.






                                    // listen for a scroll event in the window containing the DOM
                                    window.onscroll = ()=>{
                                    // grab the div we want to hide
                                    let toHide = document.getElementById('toHide');
                                    // fade the div above out by setting its opacity to 0
                                    toHide.style.opacity = 0;
                                    }

                                    html {
                                    margin: 0;
                                    border: 0;
                                    background-color: #201e2f;
                                    }

                                    p {
                                    text-align: justify;
                                    margin: 0;
                                    font-family: Ubuntu;
                                    text-transform: uppercase;
                                    text-indent: 30px;
                                    line-height: 1.5;
                                    font-size: 15px;
                                    }

                                    #parentContainer {
                                    background-color: #ffc107;
                                    height: 250px;
                                    width: 500px;
                                    float: left;
                                    }

                                    #courseImage {
                                    height: 100%;
                                    width: 30%;
                                    float: left;
                                    box-sizing: border-box;
                                    padding: 10px;
                                    }

                                    #courseDescription {
                                    height: 100%;
                                    width: 70%;
                                    float: right;
                                    box-sizing: border-box;
                                    padding-right: 10px;
                                    padding-left: 10px;
                                    padding-top: 10px;
                                    }

                                    button {
                                    height: 50px;
                                    width: 120px;
                                    background-color: #201e2f;
                                    margin: 15px;
                                    border: 0;
                                    color: #ffc107;
                                    border-radius: 5px;
                                    float: right;
                                    font-family: Ubuntu;
                                    font-size: 15px;
                                    }

                                    img {
                                    float: left;
                                    height: 100%;
                                    width: 100%;
                                    }

                                    #wrapper {
                                    display: grid;
                                    grid-gap: 20px 20px;
                                    grid-template-columns: 500px 500px;
                                    justify-content: center;
                                    }

                                    .class1 {
                                    border-top-left-radius: 10px;
                                    }

                                    .class2 {
                                    border-top-right-radius: 10px;
                                    }

                                    .class6 {
                                    border-bottom-right-radius: 10px;
                                    }

                                    .class5 {
                                    border-bottom-left-radius: 10px;
                                    }

                                    #toHide {
                                    background-color: black;
                                    height: 100%;
                                    width: 100%;
                                    position: absolute;
                                    transition: opacity 500ms ease-in-out;
                                    }

                                    <html>

                                    <head>
                                    <link rel="stylesheet" href="index.css" type="text/css">
                                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                    </head>

                                    <body>
                                    <div id="toHide">
                                    </div>
                                    <div id="wrapper">
                                    <div id="parentContainer" class="class1">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class2">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class5">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class6">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>
                                    </div>
                                    </body>

                                    </html>





                                    // listen for a scroll event in the window containing the DOM
                                    window.onscroll = ()=>{
                                    // grab the div we want to hide
                                    let toHide = document.getElementById('toHide');
                                    // fade the div above out by setting its opacity to 0
                                    toHide.style.opacity = 0;
                                    }

                                    html {
                                    margin: 0;
                                    border: 0;
                                    background-color: #201e2f;
                                    }

                                    p {
                                    text-align: justify;
                                    margin: 0;
                                    font-family: Ubuntu;
                                    text-transform: uppercase;
                                    text-indent: 30px;
                                    line-height: 1.5;
                                    font-size: 15px;
                                    }

                                    #parentContainer {
                                    background-color: #ffc107;
                                    height: 250px;
                                    width: 500px;
                                    float: left;
                                    }

                                    #courseImage {
                                    height: 100%;
                                    width: 30%;
                                    float: left;
                                    box-sizing: border-box;
                                    padding: 10px;
                                    }

                                    #courseDescription {
                                    height: 100%;
                                    width: 70%;
                                    float: right;
                                    box-sizing: border-box;
                                    padding-right: 10px;
                                    padding-left: 10px;
                                    padding-top: 10px;
                                    }

                                    button {
                                    height: 50px;
                                    width: 120px;
                                    background-color: #201e2f;
                                    margin: 15px;
                                    border: 0;
                                    color: #ffc107;
                                    border-radius: 5px;
                                    float: right;
                                    font-family: Ubuntu;
                                    font-size: 15px;
                                    }

                                    img {
                                    float: left;
                                    height: 100%;
                                    width: 100%;
                                    }

                                    #wrapper {
                                    display: grid;
                                    grid-gap: 20px 20px;
                                    grid-template-columns: 500px 500px;
                                    justify-content: center;
                                    }

                                    .class1 {
                                    border-top-left-radius: 10px;
                                    }

                                    .class2 {
                                    border-top-right-radius: 10px;
                                    }

                                    .class6 {
                                    border-bottom-right-radius: 10px;
                                    }

                                    .class5 {
                                    border-bottom-left-radius: 10px;
                                    }

                                    #toHide {
                                    background-color: black;
                                    height: 100%;
                                    width: 100%;
                                    position: absolute;
                                    transition: opacity 500ms ease-in-out;
                                    }

                                    <html>

                                    <head>
                                    <link rel="stylesheet" href="index.css" type="text/css">
                                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                    </head>

                                    <body>
                                    <div id="toHide">
                                    </div>
                                    <div id="wrapper">
                                    <div id="parentContainer" class="class1">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class2">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class5">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class6">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>
                                    </div>
                                    </body>

                                    </html>





                                    // listen for a scroll event in the window containing the DOM
                                    window.onscroll = ()=>{
                                    // grab the div we want to hide
                                    let toHide = document.getElementById('toHide');
                                    // fade the div above out by setting its opacity to 0
                                    // if the user scrolled down, scrollY will be greater than 0
                                    if(window.scrollY > 0){
                                    toHide.classList.add('hide');
                                    }
                                    else{
                                    toHide.classList.remove('hide');
                                    }
                                    }

                                    html {
                                    margin: 0;
                                    border: 0;
                                    background-color: #201e2f;
                                    }

                                    p {
                                    text-align: justify;
                                    margin: 0;
                                    font-family: Ubuntu;
                                    text-transform: uppercase;
                                    text-indent: 30px;
                                    line-height: 1.5;
                                    font-size: 15px;
                                    }

                                    #parentContainer {
                                    background-color: #ffc107;
                                    height: 250px;
                                    width: 500px;
                                    float: left;
                                    }

                                    #courseImage {
                                    height: 100%;
                                    width: 30%;
                                    float: left;
                                    box-sizing: border-box;
                                    padding: 10px;
                                    }

                                    #courseDescription {
                                    height: 100%;
                                    width: 70%;
                                    float: right;
                                    box-sizing: border-box;
                                    padding-right: 10px;
                                    padding-left: 10px;
                                    padding-top: 10px;
                                    }

                                    button {
                                    height: 50px;
                                    width: 120px;
                                    background-color: #201e2f;
                                    margin: 15px;
                                    border: 0;
                                    color: #ffc107;
                                    border-radius: 5px;
                                    float: right;
                                    font-family: Ubuntu;
                                    font-size: 15px;
                                    }

                                    img {
                                    float: left;
                                    height: 100%;
                                    width: 100%;
                                    }

                                    #wrapper {
                                    display: grid;
                                    grid-gap: 20px 20px;
                                    grid-template-columns: 500px 500px;
                                    justify-content: center;
                                    }

                                    .class1 {
                                    border-top-left-radius: 10px;
                                    }

                                    .class2 {
                                    border-top-right-radius: 10px;
                                    }

                                    .class6 {
                                    border-bottom-right-radius: 10px;
                                    }

                                    .class5 {
                                    border-bottom-left-radius: 10px;
                                    }

                                    #toHide {
                                    background-color: black;
                                    height: 100%;
                                    width: 100%;
                                    position: absolute;
                                    transition: opacity 500ms ease-in-out;
                                    }

                                    .hide {
                                    opacity: 0;
                                    }

                                    <html>

                                    <head>
                                    <link rel="stylesheet" href="index.css" type="text/css">
                                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                    </head>

                                    <body>
                                    <div id="toHide">
                                    </div>
                                    <div id="wrapper">
                                    <div id="parentContainer" class="class1">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class2">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class5">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class6">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>
                                    </div>
                                    </body>

                                    </html>





                                    // listen for a scroll event in the window containing the DOM
                                    window.onscroll = ()=>{
                                    // grab the div we want to hide
                                    let toHide = document.getElementById('toHide');
                                    // fade the div above out by setting its opacity to 0
                                    // if the user scrolled down, scrollY will be greater than 0
                                    if(window.scrollY > 0){
                                    toHide.classList.add('hide');
                                    }
                                    else{
                                    toHide.classList.remove('hide');
                                    }
                                    }

                                    html {
                                    margin: 0;
                                    border: 0;
                                    background-color: #201e2f;
                                    }

                                    p {
                                    text-align: justify;
                                    margin: 0;
                                    font-family: Ubuntu;
                                    text-transform: uppercase;
                                    text-indent: 30px;
                                    line-height: 1.5;
                                    font-size: 15px;
                                    }

                                    #parentContainer {
                                    background-color: #ffc107;
                                    height: 250px;
                                    width: 500px;
                                    float: left;
                                    }

                                    #courseImage {
                                    height: 100%;
                                    width: 30%;
                                    float: left;
                                    box-sizing: border-box;
                                    padding: 10px;
                                    }

                                    #courseDescription {
                                    height: 100%;
                                    width: 70%;
                                    float: right;
                                    box-sizing: border-box;
                                    padding-right: 10px;
                                    padding-left: 10px;
                                    padding-top: 10px;
                                    }

                                    button {
                                    height: 50px;
                                    width: 120px;
                                    background-color: #201e2f;
                                    margin: 15px;
                                    border: 0;
                                    color: #ffc107;
                                    border-radius: 5px;
                                    float: right;
                                    font-family: Ubuntu;
                                    font-size: 15px;
                                    }

                                    img {
                                    float: left;
                                    height: 100%;
                                    width: 100%;
                                    }

                                    #wrapper {
                                    display: grid;
                                    grid-gap: 20px 20px;
                                    grid-template-columns: 500px 500px;
                                    justify-content: center;
                                    }

                                    .class1 {
                                    border-top-left-radius: 10px;
                                    }

                                    .class2 {
                                    border-top-right-radius: 10px;
                                    }

                                    .class6 {
                                    border-bottom-right-radius: 10px;
                                    }

                                    .class5 {
                                    border-bottom-left-radius: 10px;
                                    }

                                    #toHide {
                                    background-color: black;
                                    height: 100%;
                                    width: 100%;
                                    position: absolute;
                                    transition: opacity 500ms ease-in-out;
                                    }

                                    .hide {
                                    opacity: 0;
                                    }

                                    <html>

                                    <head>
                                    <link rel="stylesheet" href="index.css" type="text/css">
                                    <link href="https://fonts.googleapis.com/css?family=Ubuntu" rel="stylesheet">
                                    </head>

                                    <body>
                                    <div id="toHide">
                                    </div>
                                    <div id="wrapper">
                                    <div id="parentContainer" class="class1">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer" class="class2">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
                                    </p>

                                    <button id="startButton">
                                    Start Learning!
                                    </button>
                                    </div>
                                    </div>

                                    <div id="parentContainer">
                                    <div id="courseImage">
                                    <img src="wd.png" alt="Sorry, couldn't load image">
                                    </div>

                                    <div id="courseDescription">
                                    <p>
                                    Lorem ipsum dolor sit amet, consectetur adipiscing elit. Nam dictum, lacus vel commodo semper, nisi elit ultricies lacus, in interdum massa mi at nisl. Praesent sit amet commodo nunc, sit amet mattis dui. Cras sodales sit amet velit sed tristique.
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                                    edited Nov 21 '18 at 16:43

























                                    answered Nov 21 '18 at 15:50









                                    C.RaysOfTheSunC.RaysOfTheSun

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