diff --git a/core/themes/bartik/css/layout.css b/core/themes/bartik/css/layout.css
index 4817eef2c6fc3ea06ed1c9d835969abd00188a0b..8c1ff95c9b1ca9ff0947b564c48ebf44bd1e5421 100644
--- a/core/themes/bartik/css/layout.css
+++ b/core/themes/bartik/css/layout.css
@@ -161,6 +161,9 @@ body,
   .one-sidebar #content {
     width: 75%;
   }
+  .no-sidebars #content {
+    width: 100%;
+  }
   .sidebar-first #content {
     margin-left: 25%;
     margin-right: 0;