Board Thread:Support Requests - Getting Technical/@comment-5693502-20150529163641/@comment-452-20150530140210

No, any time the word "style" is used, it refers to CSS (Cascading Style Sheet).

If the word "script" was used, it would refer to JS (Javascript).

So, Common.css/Wikia.css

(See Help:JavaScript and CSS Cheatsheet for more info.)