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I would like to adjust the position of a box created with tcolorbox by respecting the values of the horizontal margin on each of the two sides. For instance : I would like to avoid the box to appear like this :

enter image description here

I have specified width = \textwidth but I don't understand why the result appears like this...

Here is my code :

\documentclass{article}

\usepackage{geometry}
\geometry{hmargin=1cm,vmargin=1.5cm}
\usepackage{pgf, tikz, adjustbox}
\usepackage{tcolorbox}


\begin{document}


\tcbset{colback=red!5!white,colframe=red!75!black,fonttitle=\bfseries, width = \textwidth}
\begin{tcolorbox}[before=\adjustbox{valign=t}\bgroup, after=\egroup]
\textbf{A retenir}
Bla-bla-bla
\end{tcolorbox}


\end{document}

I have specified the margin size with the line \geometry{hmargin=1cm,vmargin=1.5cm} but it seems like it's not respected by the box adjustment.

Thank you for your help,

Best regards.

Waxler
  • 680

1 Answers1

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The problem is not the tcolorbox but your geometry specifications and your width specification. This is how the ouput looks:

enter image description here

From the image you can see that the box is indeed as wide as the text, but has a \parindent at the start. To fix this, simply change the width to width = \linewidth-\parindent. This produces:

enter image description here

To fix get rid of the \parindent to the left of the box, simply use \noindent before the box environment.

enter image description here

Also: here is a link to specifications of geometry: https://www.overleaf.com/learn/latex/Page_size_and_margins

Vebjorn
  • 1,778
  • Thank you @Vebjorn : actually I have already seen this documentation but didn't understand it well. For instance the last figure of the \layout shows different dimensions but what is \geometry{hmargin=1cm,vmargin=1.5cm} really fixing ? Is it n°3 \oddsidemargin or something else ? Also what is \parindent please ? – Waxler May 21 '22 at 18:28
  • \parindent is the space (indent) on the first line in the paragraph. I guess hmargin is the horisontal margin (on both sides, total horisontal margin) and vmargin is the vertical margin (on top and bottom). I use left= and right= to fix the margins. – Vebjorn May 21 '22 at 18:37
  • How do you think it would be possible to have the same values on both sides of the box equal to the values of hmargin ? (instead of putting parindent) – Waxler May 21 '22 at 18:39
  • Try \noindent before the box. See this question: https://tex.stackexchange.com/questions/337771/remove-indent-space-left-of-tcolorbox-box – Vebjorn May 21 '22 at 18:49