diff --git a/static/css/cours.css b/static/css/cours.css
index 4ed74a2..8110335 100644
--- a/static/css/cours.css
+++ b/static/css/cours.css
@@ -2,6 +2,8 @@
 aside {
   float: left;
   margin-left: 20px;
+  position: sticky;
+  top: 0;
 }
 
 aside ul {