fix issue

templates/repo/header.tmpl

@@ -133,7 +133,7 @@
 {{end}}
 	<div class="ui tabs container">
 		{{if not .Repository.IsBeingCreated}}
-			<div class="ui tabular menu navbar" style="overflow-x:auto;overflow-y:hidden">
+			<div class="ui tabular menu navbar">
 				{{if .Permission.CanRead $.UnitTypeCode}}
 				<div class="dropdown-menu">
 					<a class="{{if or .PageIsViewCode .PageIsReleaseList .PageIsWiki .PageIsActivity .PageIsViewCode}}active{{end}} item hover_active" href="{{.RepoLink}}{{if (ne .BranchName .Repository.DefaultBranch)}}/src/{{.BranchNameSubURL | EscapePound}}{{end}}">