Gap under the nav menu

Hi, love this theme and am currently customizing it a bit to fit my needs.

I was wondering how I would get rid of this gap under the navigation menu so it is connected with the page title and breadcrumbs. Here is a screen shot with the part I want to get rid of in red.

https://www.dropbox.com/s/bxrbj4lobnj5yux/gap.jpg

I look around in the main.css but was unable to find where it might be. Anyways thanks in advance!