User blog comment:Ultimate Dark Carnage/Carnage's Guide to Creating a Main Page/@comment-168424-20140825043700

You need to be more clear about importing MediaWiki:MainPage.css by putting the code into either MediaWiki:Wikia.css (for default skin Oasis) or MediaWiki:Common.css (for non-default, unsupported skin Monobook). Also, admins can name the CSS page they store main page CSS anything they want that makes sense to them, like MediaWiki:MainPageStyles.css instead.