diff --git a/src/wp-admin/css/theme.css b/src/wp-admin/css/theme.css
index a17440191e..44be5f1fd0 100644
--- a/src/wp-admin/css/theme.css
+++ b/src/wp-admin/css/theme.css
@@ -232,6 +232,7 @@
 	opacity: 1;
 	line-height: 48px;
 	padding: 0 10px;
+	z-index: 1;
 }
 .theme.active .theme-actions .button {
 	float: right;