diff --git a/hdr.tex b/hdr.tex
index 02c0cde..02ca4f4 100644
--- a/hdr.tex
+++ b/hdr.tex
@@ -25,6 +25,7 @@
 \usepackage[language=english]{lipsum}
 \usepackage{fontspec}
 \usepackage{polyglossia}
+\usepackage{titlesec}
 
 \hypersetup{
   pdfauthor={Sergiu Ivanov},
@@ -50,6 +51,18 @@
 \setdefaultlanguage{english}
 \setotherlanguages{french}
 
+
+\titleformat{\chapter}[frame]
+{\itshape\color{Prune}}
+{\filright
+  \normalsize
+  \enspace Chapter \thechapter\enspace}
+{10mm}
+{\fontsize{35}{20}\selectfont\normalfont\bfseries\filright\hspace{1ex}}
+\titleformat{\section}{\Large\normalfont\bfseries\color{Prune}}{\thesection \hspace{1ex}}{1ex}{}
+\titleformat{\subsection}{\large\normalfont\bfseries\color{Prune}}{\thesubsection \hspace{1ex}}{1ex}{}
+\titleformat{\subsubsection}{\normalsize\normalfont\bfseries\color{Prune}}{}{1ex}{}
+
 \graphicspath{{pics/}}
 \usetikzlibrary{calc}