Need CSS to decrease top padding in woo storefront.

Hi, thanks for helping me! My problem is that I’ve inserted code into my child theme to get rid of the page titles and the horizontal line in my Woo StoreFront theme, and now I have this huge gap between my header and page content.

http://www.grippwerx.com

Can anyone give me some CSS to get rid of that gap? I’m hesitant to try writing my own CSS as I’ve already crashed my site once trying to do that, and the worst of it is that I still have no idea how I managed that, lol.