diff --git a/app/assets/stylesheets/app.scss b/app/assets/stylesheets/app.scss
index e049ec7b4..4258962a1 100644
--- a/app/assets/stylesheets/app.scss
+++ b/app/assets/stylesheets/app.scss
@@ -47,7 +47,9 @@
 }
 
 
-
+.column-three-quarters {
+  @include grid-column(3/4);
+}
 
 
 
diff --git a/app/templates/withnav_template.html b/app/templates/withnav_template.html
index b0bd19960..10bd186b1 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-third">
+	<div class="column-quarter">
 		{{ main_nav() }}
 	</div>
-	<div class="column-two-thirds">
+	<div class="column-three-quarters">
 		{% block maincolumn_content %}{% endblock %}
 	</div>
 </div>