diff --git a/cms/static/sass/views/_unit.scss b/cms/static/sass/views/_unit.scss
index 1cd74e12a1..0c93e26415 100644
--- a/cms/static/sass/views/_unit.scss
+++ b/cms/static/sass/views/_unit.scss
@@ -881,6 +881,8 @@ body.unit {
       padding: $baseline/4 $baseline/2;
       top: 0;
       left: 0;
+      border-bottom: 1px solid $gray-l4;
+      background-color: $gray-l6;
     }
 
     .component-header {