Create A Forum - Support Forums

There's not a lot of help in customizing our boards here, but a lot of references to a CSS website.


In attempting to modify rather than start anew, I've managed to squeeze my forums into a non-usable size.
Is there the ability to remove the edited portion of the Halloween style sheet, so I can return to my normal size.


I'm simply trying to reduce the size of the forums (width) and use a background image that surrounds the board.



http://tropicalwannabe.createaforum.com/index.php
Thanks!

Thank you very much, sorry for the trouble.