diff --git a/ffgTemplate.sty b/ffgTemplate.sty
index d9f332b..3e3dedf 100644
--- a/ffgTemplate.sty
+++ b/ffgTemplate.sty
@@ -27,6 +27,7 @@
 \RequirePackage{xspace}                                         % Gestion intelligente de l'espace après une commande
 \RequirePackage{lmodern}                                        % Police de caractère
 \RequirePackage{calc}                                           % Syntaxe naturelle pour les calculs
+\RequirePackage{framed}
 
 
 % Layout Page de garde
@@ -91,10 +92,38 @@
 \setlength\fboxrule{0.75pt}
 \newcommand{\mybox}[1]{\fbox{$~~~ \displaystyle#1 ~~~$}}
 
-\theoremstyle{definition}
-\newtheorem*{definition}{Définition}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Redefine Theoreme & Definition
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\newtheoremstyle{new_theorem_style}
+{\topsep}       % space before
+{\topsep}       % space after
+{
+    \itshape
+}               % body font
+{}              % indent
+{\bfseries}     % header font
+{}              % punctuation
+{\newline}      % after theorem header
+{
+    \thmname{#1}~\thmnumber{#2}\thmnote{\ -\ #3}\\*[-1.5ex]
+}% header specification (empty for default)
 
+\theoremstyle{new_theorem_style}
+\newtheorem*{definitionT}{Définition}
+\newenvironment{definition}
+{
+    \begin{leftbar}
+        \begin{definitionT}
+            \mbox{}\noindent\ignorespaces}{
+        \end{definitionT}
+    \end{leftbar}
+}
+    
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 % Image's first page definition
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \newcommand\BackgroundPic{%
     \put(0,0){%
         \parbox[b][\paperheight]{\paperwidth}{%