Thread:Ursuul/@comment-30691033-20171011023510/@comment-28083312-20171011025106

Right, so, only four .css MediaWiki files actually effect the Wiki by default; (effects all skins + chat),  (effects Oasis + chat),  (effects Monobook only), &  (effects chat only). Every other CSS file just exists, it stores the CSS but doesn’t do anything. In order for Staff.css to work on that Wiki, you need to @import the stylesheet into one of the four stylesheets (in this case, you will want MediaWiki:Wikia.css), then the contents of Staff.css will apply to all users in the Oasis Skin (the default desktop skin). You can do it by adding the following to the very top of MediaWiki:Wikia.css: