Any CSS wizards around by chance?

I'm a CSS novice but I do my best. Was trying to merge the Top Posters add-on into my style and got it pretty much sorted except I have a small overlap from the category strip. I've used the inspect option in browser and can't seem to find what is causing it. If anyone is willing to lend an eye, I'd be greatly appreciative -- it's the Our Top Contributors heading at the bottom of the node list.