diff --git a/templates/theme.html b/templates/theme.html
index 3f59f6c..2931415 100644
--- a/templates/theme.html
+++ b/templates/theme.html
@@ -118,7 +118,7 @@
 {% endif %}
 {% endblock %}
 
-    <div id="content" class="large">
+    <div id="content" class="gru-content large">
             {% block content %}
             {% endblock %}
     </div> <!-- #content -->