Board Thread:Support Requests - Designing Your Wikia/@comment-24020664-20140327191648/@comment-4902411-20140328052123

The CSS import (second import, after the font one) should be added to your wiki's MediaWiki: Wikia .css (TK highlighted that too). Remove it from MediaWiki:Wikia.css to MediaWiki:Wikia.css, and it should work.