Admin Forum:Wikitable and file description table

I need to edit two things for Monobook - the wikitable class and the table that contains file data on the description page. I want to these to look like on Oasis - on MB these are all white. My wiki is here. I'm really bad when it comes to CSS, so could you help me? Thanks, Final Cannon 21:44, January 2, 2012 (UTC)