diff --git a/app/assets/stylesheets/layout.scss b/app/assets/stylesheets/layout.scss
index cf07f35ca..7e41026f1 100644
--- a/app/assets/stylesheets/layout.scss
+++ b/app/assets/stylesheets/layout.scss
@@ -205,7 +205,7 @@ a {
 
 .menu.simple {
   border-bottom: 1px solid $border;
-  margin: $line-height 0;
+  margin-bottom: $line-height;
 
   li {
     padding-bottom: rem-calc(7);