diff --git a/PhysiqueMPSI/index.markdown b/PhysiqueMPSI/index.markdown
index d99d041..8d13627 100644
--- a/PhysiqueMPSI/index.markdown
+++ b/PhysiqueMPSI/index.markdown
@@ -11,4 +11,4 @@ categories: index
 
 ## [Exercices - Chapitre 1](Physique_MPSI_1_EX.markdown)
 
-[Come back later](../404.html)
\ No newline at end of file
+## [Références - Sources](ref.markdown)
\ No newline at end of file
diff --git a/_config.yml b/_config.yml
index 78b06cf..e8b55eb 100644
--- a/_config.yml
+++ b/_config.yml
@@ -21,9 +21,7 @@
 title: Le French Math Project
 email: your-email@example.com
 description: >- # this means to ignore newlines until "baseurl:"
-  Write an awesome description for your new site here. You can edit this
-  line in _config.yml. It will appear in your document head meta (for
-  Google search results) and in your feed.xml site description.
+  Habitat de Vincent G. COLIN. Cours de maths, physique, et autres réjouissances scientifiques. 
 baseurl: "" # the subpath of your site, e.g. /blog
 url: "" # the base hostname & protocol for your site, e.g. http://example.com
 linkedin_username: vincent-g-colin-819083152
diff --git a/about.markdown b/about.markdown
index e6e5143..c6ec33c 100644
--- a/about.markdown
+++ b/about.markdown
@@ -4,17 +4,10 @@ title: About
 permalink: /about/
 ---
 
+Je suis Vincent COLIN, actuellement enseignant dans l'école d'ingénieur ISEN Ouest. 
+
 Ce site a été créé dans le but de concentrer tous les cours ainsi que les sources que j'utilise lors de leur écriture. 
 
-This is the base Jekyll theme. You can find out more info about customizing your Jekyll theme, as well as basic Jekyll usage documentation at [jekyllrb.com](https://jekyllrb.com/)
-
-You can find the source code for Minima at GitHub:
-[jekyll][jekyll-organization] /
-[minima](https://github.com/jekyll/minima)
-
-You can find the source code for Jekyll at GitHub:
-[jekyll][jekyll-organization] /
-[jekyll](https://github.com/jekyll/jekyll)
-
-
-[jekyll-organization]: https://github.com/jekyll
+<div class="container">
+  <img src="assets/404.jpg" alt="Hello">
+</div>
\ No newline at end of file