diff --git a/build/scss/_layout.scss b/build/scss/_layout.scss
index 8f37bd571..0825ab391 100644
--- a/build/scss/_layout.scss
+++ b/build/scss/_layout.scss
@@ -26,6 +26,7 @@ body,
     &::before {
       margin: 0 auto;
       max-width: $boxed-layout-max-width;
+      overflow: hidden;
     }
 
     .main-sidebar {