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My problem is when I use documentclass{book} leftmargin and rightmargin has no reaction, but It works with documentclass{article}. How I can fix this? I have to use documentclass{book}.

enter code here\begin{mdframed}[backgroundcolor=lightgray, leftmargin=1cm,rightmargin=1cm,roundcorner=8pt] 

marked as duplicate by Ludovic C., Torbjørn T., Stefan Kottwitz Oct 16 '13 at 14:10

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  • Please post a full , minimal compilable example such that we do not have to guess about the rest of the document. – daleif Oct 16 '13 at 12:01
  • Include \documentclass, \usepackage{} and \end{document} commands in your minimal working example (MWE) – masu Oct 16 '13 at 12:18

Book is twosided, so in that case what is left and right? especially when they have different values.

See the section 6.7 in the mdframed manual. This works





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