Board Thread:Support Requests - Getting Technical/@comment-84.13.78.6-20121213194645/@comment-3508190-20121213202353

Copying the template is not enough sometimes. In this case there are also a bunch of CSS rules that govern that template. This is the one that's responsible for the font-size:

Try to add this rule to your MediaWiki:Wikia.css!

See also:

Help:JavaScript_and_CSS_Cheatsheet

W3Schools CSS Tutorial