diff --git a/scss/_close.scss b/scss/_close.scss
index 071aebe80f..82e9593ef1 100644
--- a/scss/_close.scss
+++ b/scss/_close.scss
@@ -30,7 +30,6 @@ button.close {
   padding: 0;
   background-color: transparent;
   border: 0;
-  appearance: none;
 }
 
 // Future-proof disabling of clicks on `<a>` elements