diff --git a/_layouts/main.html b/_layouts/main.html
index a90adb1..8b1dfbc 100644
--- a/_layouts/main.html
+++ b/_layouts/main.html
@@ -19,7 +19,9 @@
                 <li><a href="/stream/">Streaming simulator</a></li>
             </ul>
         </nav>
-        {{ content }}
+        <section>
+            {{ content }}
+        <section>
         {{ page.extrajs }}
     </body>
 </html>
diff --git a/index.md b/index.md
index c09fd2e..aae2be7 100644
--- a/index.md
+++ b/index.md
@@ -29,4 +29,3 @@ title: Index
     A mesh of a sphere is fully loaded,
     and displayed progressively. This test is here to prove that we can dynamically
     add vertices and faces to a mesh.
-