diff --git a/tools/style/shortcuts.sty b/tools/style/shortcuts.sty
index 8b9b850..a3e4df8 100755
--- a/tools/style/shortcuts.sty
+++ b/tools/style/shortcuts.sty
@@ -351,10 +351,24 @@
 }}
 
 % Environnements théoreme, définition ...
+\newenvironment{encadre}[1]
+{
+    \begin{bclogo}[barre=none, arrondi=0.1, logo=]{#1}
+        }{
+    \end{bclogo}
+}
+
 \newcounter{doc}
 \newenvironment{doc}[1]
 {\refstepcounter{doc}
-\begin{bclogo}[barre=none, arrondi=0.1, logo=]{Document \thedoc: #1}
-}{
-\end{bclogo}
+    \begin{encadre}{Document \thedoc: #1}
+        }{
+    \end{encadre}
+}
+
+\newenvironment{definition}
+{
+    \begin{encadre}{Définition}
+        }{
+    \end{encadre}
 }