Board Thread:Support Requests - Getting Technical/@comment-25295528-20160824105046/@comment-2200849-20160824110118

Remove  from your site CSS.

Also note that abusing  in site CSS is generally discouraged, because it prevents users from applying their own customizations. Use descendant selectors and ids instead - in skin stylesheets, Wikia uses classes specifically so that admins can use ids and other specific selectors in their site CSS without having to resort to.