diff --git a/app/templates/withnav_template.html b/app/templates/withnav_template.html
index 10bd186b1..b0bd19960 100644
--- a/app/templates/withnav_template.html
+++ b/app/templates/withnav_template.html
@@ -4,10 +4,10 @@
 {% block content %}
 
 <div class="grid-row">
-	<div class="column-quarter">
+	<div class="column-third">
 		{{ main_nav() }}
 	</div>
-	<div class="column-three-quarters">
+	<div class="column-two-thirds">
 		{% block maincolumn_content %}{% endblock %}
 	</div>
 </div>