Forum:Second problem with navigation

Hi! I was able to create an image as background...but there is a way to eliminate this little line? (see the picture)

This is the page-code to edit!

http://it.squadraspecialecobra11.wikia.com/wiki/MediaWiki:Wikia.css

Could you do it? Thank you very much! --Cento93 10:01, August 28, 2011 (UTC)