diff --git a/apps/common/main/resources/less/header.less b/apps/common/main/resources/less/header.less
index 287beb641..50f541fc6 100644
--- a/apps/common/main/resources/less/header.less
+++ b/apps/common/main/resources/less/header.less
@@ -466,6 +466,7 @@
     color: @text-toolbar-header-ie;
     color: @text-toolbar-header;
     position: relative;
+    z-index: 1;
 
     .btn-slot {
         display: inline-block;