diff --git a/beamer/slides.pdf b/beamer/slides.pdf
index 52fe5cb..78b6bc4 100644
Binary files a/beamer/slides.pdf and b/beamer/slides.pdf differ
diff --git a/beamer/slides.tex b/beamer/slides.tex
index c381ff3..383bcc0 100644
--- a/beamer/slides.tex
+++ b/beamer/slides.tex
@@ -6,15 +6,64 @@
 % ---------------------------
 
 
-\documentclass[aspectratio=169]{beamer}
+\documentclass[aspectratio=169, 11pt]{beamer}
 
 \usetheme{default}
+
+% Basic packages.
+\usepackage[utf8]{inputenc}
+\usepackage[french]{babel}
+\usepackage[T1]{fontenc}
+
+
+\usepackage{amsmath}
+\usepackage{mathtools} % pour tous les ams[...] - American Mathematical Society
+\usepackage{amsfonts}
+\usepackage{dsfont}
+\usepackage{amssymb}
+\usepackage{stmaryrd} % Autres symboles mathématiques.
+% \usepackage{graphicx}
+\usepackage{hyperref}
+\usepackage{url}
+% \usepackage{float}
+\usepackage{array}
+\usepackage{mathrsfs}  % \mathscr
+%\usepackage{enumitem}
+\usepackage{enumerate}
+%\usepackage[left=3cm,right=3cm,top=3cm,bottom=3cm]{geometry}
+\usepackage{microtype}
+\usepackage{multicol}
+\usepackage{multirow}
+% \usepackage{ragged2e}
+\usepackage{comment}
 \usepackage{tikz}
 \usepackage{xcolor}
 \usepackage{graphicx}
 \usepackage{xstring}
 \usetikzlibrary{calc}
 
+\usepackage[
+backend=bibtex,
+style=alphabetic,
+sorting=ynt,
+maxbibnames=99,
+maxalphanames=99
+]{biblatex}
+% \addbibresource{biblio.bib}
+
+\mathtoolsset{showonlyrefs} % Number only referenced equations.
+
+% --- Better text wrapping ---
+\setbeamersize{text margin left=0.75cm, text margin right=1.5cm}
+\setlength{\columnsep}{0.2cm}  % default ≈ 1cm; reduce to bring columns closer
+
+\usepackage{etoolbox}   % to hook into environments
+\usepackage{ragged2e}   % you already load it; keep it
+
+% Allow multi-line equations to break if needed
+\allowdisplaybreaks
+
+
 % --- METADATA ---
 
 \title{TITLE OF THE PRESENTATION}
@@ -22,6 +71,9 @@
 \author{AUTHOR}
 \date{\today}
 
+\newcommand{\myshorttitle}{SHORT TITLE}
+
+
 
 % ---- FONTS ----
 
@@ -63,7 +115,7 @@
 }
 
 % Shorten title
-\newcommand{\shorttitle}{\StrLeft{\inserttitle}{30}}
+\newcommand{\shorttitle}{\StrLeft{\myshorttitle}{30}}
 
 
 % --- FIRST SLIDE WITH TITLE ---
@@ -76,7 +128,7 @@
      \fill[mycyan] (current page.south west) rectangle (shifted);
 
     % Logo left
-    \node[anchor=north west] at ([xshift=\bandwidth-0.5cm,yshift=0cm]current page.north west) {
+    \node[anchor=north west] at ([xshift=\bandwidth-0.35cm,yshift=0cm]current page.north west) {
       \includegraphics[height=2cm]{img/crest_color_logo.png}
     };
 
@@ -232,6 +284,7 @@
 % TITLE SLIDE
 \firstbackground
 \begin{frame}
+
 \end{frame}
 
 % CONTENT SLIDE