From d90d3697a55f1d8ae3540cd2142ae05a464bc82a Mon Sep 17 00:00:00 2001
From: Thomas Pietrzak <thomas.pietrzak@gmail.com>
Date: Mon, 30 Aug 2021 10:01:41 +0200
Subject: [PATCH] =?utf8?q?Environnement=20d=C3=A9finition?=
MIME-Version: 1.0
Content-Type: text/plain; charset=utf8
Content-Transfer-Encoding: 8bit

---
 mystyle.sty | 16 +++++++++++++---
 1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/mystyle.sty b/mystyle.sty
index 881d74a..9841f04 100644
--- a/mystyle.sty
+++ b/mystyle.sty
@@ -333,11 +333,21 @@
 
 \newtheorem{@definition}{Definition}[chapter]
 \newenvironment{definition}[1]{
-  \addcontentsline{lod}{section}{#1}
-  \vspace{3mm}\begin{mdframed}[backgroundcolor=gray90, linewidth=0pt]\begin{@definition}\upshape
+  \vspace{3mm}
+  \begin{mdframed}[backgroundcolor=gray90, 
+    outermargin=-30mm,
+    innermargin=-30mm,
+    innerleftmargin=30mm,
+    innerrightmargin=30mm,
+    innertopmargin=3mm,
+    innerbottommargin=3mm, 
+    linewidth=0pt]
+    \addcontentsline{lod}{section}{#1}
+    \begin{@definition}\upshape
 }
 {
-  \end{@definition}\end{mdframed}
+  \end{@definition}
+  \end{mdframed}
 }
 \makeatletter
 \renewcommand{\the@definition}{\arabic{@definition}}
-- 
2.30.2