diff --git a/assets/styles/main.scss b/assets/styles/main.scss
index 0dc7c2f33..c518c5cfa 100644
--- a/assets/styles/main.scss
+++ b/assets/styles/main.scss
@@ -73,4 +73,6 @@ blockquote {
     margin-top: 0;
   }
 }
-
+.main-navigation {
+  box-shadow: $box-shadow-base;
+}