User blog comment:Susanolivia/Experience the new Wikia/@comment-1158367-20100924012428

The transition guide have an error.

"The most commonly used CSS has already been transferred to ensure it continues to work on all wikis. If you have custom code for styling tables, infoboxes or other general elements, you should transfer this from common.css to wikia.css"

It's common.css to wiki.css.