diff --git a/ffgTemplate.sty b/ffgTemplate.sty
index 61a71e0..d9f332b 100644
--- a/ffgTemplate.sty
+++ b/ffgTemplate.sty
@@ -88,6 +88,12 @@
 % \renewcommand{\labelitemii}{$\circ$}
 % \AtBeginDocument{\renewcommand{\labelitemii}{\textcirc}}
 
+\setlength\fboxrule{0.75pt}
+\newcommand{\mybox}[1]{\fbox{$~~~ \displaystyle#1 ~~~$}}
+
+\theoremstyle{definition}
+\newtheorem*{definition}{Définition}
+
 % Image's first page definition
 \newcommand\BackgroundPic{%
     \put(0,0){%