Ad Block Problem

I'm trying to add an ad block to the Mimbo theme. For some reason the ad block is covering the categories list below. Please check it out: there should be space between the ad block and Browse Categories, just as there's a space and gray bar between the categories and archives.

Thanks:

http://www.selfpublishingreview.com

 

Fixed. Disregard. Delete enough code via trial and error and sometimes these things work out.