diff --git a/ui/css/base-styles.scss b/ui/css/base-styles.scss
index 454bc73a32eb..266b8f7ddcd0 100644
--- a/ui/css/base-styles.scss
+++ b/ui/css/base-styles.scss
@@ -41,12 +41,6 @@ html {
         color: var(--brand-colors-white);
       }
     }
-
-    @include design-system.screen-sm-max {
-      &:not([data-theme]) {
-        background-color: var(--brand-colors-grey-grey800);
-      }
-    }
   }
 }