Ticket #21890: 21890.2.diff

wp-admin/css/customize-controls.css

@@ -162 +162 @@
         margin: 0;
 }
 
+#customize-header-actions .button {
+        padding: 0 8px 1px;
+}
+
 #customize-header-actions .button-primary {
         float: right;
         margin-top: 10px;