Board Thread:Support Requests - Getting Technical/@comment-31660698-20180516104152/@comment-168424-20180517181259

Yeah, send a message to Special:Contact/general with the screenshots you posted here attached. Also tell them to look through the CSS, since you're right about the problem being there.

If you wanted to be proactive, you could copy all the CSS out of w:c:deltoraquest:MediaWiki:Wikia.css to a backup page, clear it out, and add back stuff in chunks to see if you can figure out what is the problem.