diff --git a/www/theme/default/style.css b/www/theme/default/style.css
index 1149ef71d8..a4fdb059c7 100644
--- a/www/theme/default/style.css
+++ b/www/theme/default/style.css
@@ -96,6 +96,7 @@ a.showMoreImage:hover {opacity: 1;}
 body.xxc-embed {overflow-x: auto; overflow-y: hidden; height: 600px;}
 body.xxc-embed.m-productplan-view,body.xxc-embed.m-bug-browse,body.xxc-embed.m-product-browse,body.xxc-embed.m-execution-story,body.xxc-embed.m-execution-bug,body.xxc-embed.m-execution-task {height: unset;}
 .xxc-embed #header {position: fixed;top: 0;width: 100%;z-index: 10;}
+.xxc-embed #header > #mainHeader > .container {z-index: 10;}
 .xxc-embed #toolbar {position: fixed;right: 120px!important;}
 .xxc-embed #main {position: absolute;top: 50px;bottom: 0;left: 0;right: 0;overflow: auto;}
 .xxc-embed .fix-table-copy-wrapper {top: 50px!important;}