--- a/Allura/allura/ext/admin/templates/project_groups.html
+++ b/Allura/allura/ext/admin/templates/project_groups.html
@@ -20,6 +20,7 @@
 {% endblock %}
 
 {% block content %}
+<div class="grid-20">
 <form method="POST" action="update">
   {% set index=0 %}
   {% for row in roles|batch(4) %}
@@ -87,4 +88,5 @@
 $('#sortable').sortable({items: ".fleft"});
 }());
 </script>
+</div>
 {% endblock %}