Cfrgtkky

Alright people, I've stumped myself again. It appears (to me at least) that tcolorbox has some outside margins or padding that I don't know how to control.

I use tikz absolute positioning to format the elements of my letters that I need in specific space. For example, this below payment slip need to stay inside the top third of this page (represented by the red filling) because this will be printed on a perforated page.

documentclass[letterpaper]{letter}

usepackage[lmargin=30pt,rmargin=30pt,tmargin=30pt,bmargin=30pt,includefoot]{geometry}

usepackage{lastpage}

usepackage{textcomp}

usepackage{eurosym}

usepackage{setspace}

usepackage{helvet}

usepackage{times}

usepackage[T1]{fontenc}

usepackage{lmodern}

usepackage[utf8]{inputenc}

usepackage{multirow}

usepackage{longtable}

usepackage{array}

usepackage[table]{xcolor}

usepackage{graphicx}

usepackage{tcolorbox}

usepackage{tikz}

usetikzlibrary{shapes,positioning} 

usepackage{qrcode}

usepackage{pst-barcode}

graphicspath{{/usr/local/lariat/.template/lib/img/logo/}}









 pgfdeclarelayer{back}

 pgfdeclarelayer{front}

 pgfsetlayers{back,main,front}



begin{document}



fontencoding{T1}

fontfamily{phv}

fontsize{10}{12}

selectfont







begin{tikzpicture}[remember picture,overlay]



    begin{pgfonlayer}{front}









        node [xshift=-0pt,yshift=0pt, fill=red, minimum height=264pt, minimum width=614pt,anchor=north east] at (current page.north east) {};



        node [xshift=-0pt,yshift=-5pt, anchor=north east] at (current page.north east) {

            begin{tcolorbox}[width=582pt, colframe=darkgray, colback=darkgray, left=-3pt, top=-5pt, coltitle=white, boxsep=2mm, boxcolor=red,boxrule=.1mm, arc=1.5mm, title=centering textbf{Payment Authorization}]

                includegraphics[width=575pt]{paymentform.pdf} 

            end{tcolorbox}

        };





    end{pgfonlayer}

end{tikzpicture}





end{document}

Additionally, I've noticed that my letter paper is actually 614pt instead of 612pt wide, does anyone know why that is?

Thanks in advance for your assistance you beautiful Latex people.

This could be an alternative construction without tcolorbox

documentclass[letterpaper]{letter}

usepackage[lmargin=30pt,rmargin=30pt,tmargin=30pt,bmargin=30pt,includefoot]{geometry}

usepackage[T1]{fontenc}

usepackage{lmodern}

usepackage[utf8]{inputenc}

usepackage{tikz}

usetikzlibrary{shapes,positioning} 



begin{document}



begin{tikzpicture}[remember picture,overlay]

node[fill=red, 

        minimum height=264pt, minimum width=614pt, 

      below left=0pt of current page.north east] (A) {};



matrix[rounded corners, fill=darkgray,     

    below left=0pt of current page.north east] 

    {

        node[anchor=center, font=sffamilybfseries, color=white]{Payment Authorization};\

        node[anchor=center, inner sep=0pt]{includegraphics[width=575pt, height=200pt]{example-image-A}};\

    };

end{tikzpicture}

end{document}