diff --git a/latex/main.pdf b/latex/main.pdf
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diff --git a/latex/main.tex b/latex/main.tex
index ef6c862..70fb695 100644
--- a/latex/main.tex
+++ b/latex/main.tex
@@ -9,7 +9,7 @@
     \parbox{\textwidth}{
         \sffamily % arial
         \textbf{Oskar ORVIK \\ Aleksander TABAN \\  Brage JOHNSEN}\\
-        Elève Ingénieurs \\ de l'INSA Toulouse\\
+        Elève Ingénieurs de l'INSA Toulouse\\
         Département GEI \\
         Spécialité AE-SE \\
         Promotion 60 \\
diff --git a/latex/template/premiere_page.tex b/latex/template/premiere_page.tex
index 2102d2a..dfe835c 100644
--- a/latex/template/premiere_page.tex
+++ b/latex/template/premiere_page.tex
@@ -13,8 +13,8 @@
     \fill[fill=couleurcarre]([xshift=-4.7cm, yshift=-4.5cm]current page.north east) rectangle ++(3.5cm, 3.5cm);
     
     % Ajouter du texte à une position spécifique
-    \node at (2.1, -4) {\LARGE \bfseries \MakeUppercase{\sffamily \titre}};
-    \node at (6.8, -7) {\large \firstcouverture};
+    \node at (3.25, -3.5) {\LARGE \bfseries \MakeUppercase{\sffamily \titre}};
+    \node at (6.8, -6.2) {\large \firstcouverture};
     \node at (6.8, -17) {\secondcouverture};
     %\node at (11.5, -12.2) {\includegraphics[height=3cm]{\imagecouverture}};
     %\node at (15.05, -0.3) {\includegraphics[width=3cm]{\imagecouverture}};
diff --git a/presentation/main.pdf b/presentation/main.pdf
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diff --git a/presentation/main.tex b/presentation/main.tex
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--- /dev/null
+++ b/presentation/main.tex
@@ -0,0 +1,206 @@
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% Overleaf (WriteLaTeX) Example: Molecular Chemistry Presentation
+%
+% Source: http://www.overleaf.com
+%
+% In these slides we show how Overleaf can be used with standard 
+% chemistry packages to easily create professional presentations.
+% 
+% Feel free to distribute this example, but please keep the referral
+% to overleaf.com
+% 
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+% How to use Overleaf: 
+%
+% You edit the source code here on the left, and the preview on the
+% right shows you the result within a few seconds.
+%
+% Bookmark this page and share the URL with your co-authors. They can
+% edit at the same time!
+%
+% You can upload figures, bibliographies, custom classes and
+% styles using the files menu.
+%
+% If you're new to LaTeX, the wikibook is a great place to start:
+% http://en.wikibooks.org/wiki/LaTeX
+%
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+\documentclass[hyperref={colorlinks,citecolor=blue,linkcolor=blue,urlcolor=blue}]{beamer}
+
+% For more themes, color themes and font themes, see:
+% http://deic.uab.es/~iblanes/beamer_gallery/index_by_theme.html
+%
+\mode<presentation>
+{
+  \usetheme{Madrid}       % or try default, Darmstadt, Warsaw, ...
+  \usecolortheme{default} % or try albatross, beaver, crane, ...
+  \usefonttheme{serif}    % or try default, structurebold, ...
+  \setbeamertemplate{navigation symbols}{}
+  \setbeamertemplate{caption}[numbered]
+} 
+
+\usepackage[english]{babel}
+\usepackage[utf8x]{inputenc}
+\usepackage{chemfig}
+\usepackage[version=3]{mhchem}
+
+% On Overleaf, these lines give you sharper preview images.
+% You might want to `comment them out before you export, though.
+\usepackage{pgfpages}
+\pgfpagesuselayout{resize to}[%
+  physical paper width=8in, physical paper height=6in]
+
+% Here's where the presentation starts, with the info for the title slide
+\title[Molecules in \LaTeX{}]{A short presentation on molecules in \LaTeX{}}
+\author{J. Hammersley}
+\institute{www.overleaf.com}
+\date{\today}
+
+\begin{document}
+
+\begin{frame}
+  \titlepage
+\end{frame}
+
+% These three lines create an automatically generated table of contents.
+\begin{frame}{Outline}
+  \tableofcontents
+\end{frame}
+
+\section{Introduction}
+
+\begin{frame}{Introduction}
+
+\begin{itemize}
+  \item In these slides we show how Overleaf can be used with standard chemistry packages to easily create professional presentations.
+  \item If you're new to \LaTeX{}, check out our webinars: \url{www.overleaf.com/events/webinars}
+  \item You can also find more quick tips and tricks on the help pages at \url{www.overleaf.com/learn}
+\end{itemize}
+
+% Example from Chemfig documentation - Fischer indole synthesis:
+% www.tex.ac.uk/ctan/macros/generic/chemfig/chemfig_doc_en.pdf
+\begin{center}\small\setchemfig{atom sep=1.5em}
+\schemestart
+  \chemfig{*6(=-*6(-\chembelow{N}{H}-NH_2)=-=-)}
+  \+
+  \chemfig{(=[:-150]O)(-[:-30]R_2)-[2]-[:150]R_1}
+  \arrow(.mid east--.mid west){->[\chemfig{H^+}]}
+  \chemfig{*6(-=*5(-\chembelow{N}{H}-(-R_2)=(-R_1)-)-=-=)}
+\schemestop
+\end{center}
+
+\end{frame}
+
+\subsection{The chemistry packages}
+\begin{frame}{The chemistry packages}
+
+We focus on two \LaTeX{} chemistry packages:
+\begin{block}{The \texttt{chemfig} package}
+This package provides the command which draws molecules. Created by Christian Tellechea, a detailed user guide can be found here:\\[0.4cm]
+\small{\url{https://mirror.ox.ac.uk/sites/ctan.org/macros/generic/chemfig/chemfig-en.pdf}}
+\end{block}
+\begin{block}{The \texttt{mhchem} package}
+The \texttt{mhchem} package provides simple commands for typesetting chemical molecular formulae and equations. Created by Martin Hensel, a detailed user guide can be found here:\\[0.4cm]
+\small{\url{https://anorien.csc.warwick.ac.uk/mirrors/CTAN/macros/latex/contrib/mhchem/mhchem.pdf}}
+\end{block}
+% The LaTeX wikibook is also a good source of info, e.g.
+% http://en.wikibooks.org/wiki/LaTeX/Chemical_Graphics
+
+\end{frame}
+
+\section{Using chemistry packages with \LaTeX{}}
+
+\subsection{Chemical equations with \texttt{mhchem}}
+
+\begin{frame}[fragile]
+\frametitle{Chemical equations with \texttt{mhchem}}
+
+\begin{itemize}
+\item The \texttt{mhchem} package lets you write chemical equations in \LaTeX{} with the minimum of effort. 
+\item The example below shows how the standard representation of a reaction (on the left) is created from the simple code on the right:
+\end{itemize}
+
+\begin{center}
+\ce{CO2 + C -> 2CO} is created with \verb|\ce{CO2 + C -> 2CO}|
+\end{center}
+
+\begin{itemize}
+\item More complicated reactions are still easy to write:
+\end{itemize}
+
+\begin{center}
+\ce{SO4^2- + Ba^2+ -> BaSO4 v}\\[0.1cm]
+is created with\\[0.1cm]
+\verb|\ce{SO4^2- + Ba^2+ -> BaSO4 v}|
+\end{center}
+
+\end{frame}
+
+\subsection{Getting started with some \texttt{chemfig} coffee}
+
+\begin{frame}[fragile]
+\frametitle{Getting started with some \texttt{chemfig} coffee}
+
+It's easy to use the \texttt{chemfig} package for drawing complex molecules:
+
+\vskip 0.5cm
+
+\begin{center}\small\setchemfig{atom sep=2.0em}
+\schemestart  
+\chemfig{*6((=O)-N(-CH_3)-*5(-N=-N(-CH_3)-=)--(=O)-N(-H_3C)-)}
+\schemestop
+\end{center}
+
+This is the caffeine molecule, represented clearly and neatly, and built from a single line of text: \small{\verb|\chemfig{*6((=O)-N(-CH_3)-*5(-N=-N(-CH_3)-=)--(=O)-N(-H_3C)-)}|}\\[0.3cm]
+
+If that looks quite daunting, we can learn from simpler molecules\dots{}how about a single water molecule?
+
+\end{frame}
+
+\subsection{Experiments with water and rings}
+
+\begin{frame}[fragile]
+\frametitle{Experiments with water and rings}
+
+To see how the \texttt{chemfig} package creates the drawings from your code, let us look at the simple water molecule:
+
+\vskip 0.3cm
+\begin{center} 
+\chemfig{H_2O} is created with \verb|\chemfig{H_2O}|
+\end{center}
+
+The simple \LaTeX{} code on the right is automatically converted into the molecular formula for water on the left. 
+\vskip 0.3cm
+Rings are similarly easy to code - consider the examples below:
+
+\vskip 0.3cm
+
+\chemfig[atom style={scale=0.5}]{A*5(-B-C-D-E-)} = 
+\verb|\chemfig{A*5(-B-C-D-E-)}|
+
+\vskip 0.3cm
+
+\chemfig[atom style={scale=0.5}]{*6(=-=-=-)} = \verb|\chemfig{*6(=-=-=-)}|
+
+
+\end{frame}
+
+\section{Where to go next\dots{}}
+
+\begin{frame}{Where to go next\dots{}}
+
+\begin{itemize}
+\item This short example was designed to introduce you to using Overleaf for scientific presentations.
+\item This is made possible by the many great packages that have been developed for \LaTeX{}, including the two we focused on here (plus the \texttt{Beamer} package used for the overall presentation style). 
+\item For more help on using \LaTeX{}, see the links on the Overleaf help page: \url{www.overleaf.com/help} or check out our free introductory webinars: \url{www.overleaf.com/events/webinars}.
+\end{itemize}
+
+\begin{center}
+Follow @overleaf on Twitter for all the latest news and updates.\\[0.3cm]
+Happy \LaTeX ing!
+\end{center}
+
+\end{frame}
+
+\end{document}
\ No newline at end of file