diff --git a/src/wp-admin/css/customize-nav-menus.css b/src/wp-admin/css/customize-nav-menus.css
index 77a839c695..e32c86e856 100644
--- a/src/wp-admin/css/customize-nav-menus.css
+++ b/src/wp-admin/css/customize-nav-menus.css
@@ -304,6 +304,7 @@
 	border: none;
 	color: #555;
 	cursor: pointer;
+	margin: 0;
 	padding: 20px;
 	position: absolute;
 	right: 31px;