Main nav boxes have white border

Hi @sakin, I'm using simple catch to show a client what your templates can do and I'm trying to get the main nav looking right. www.marcomsonline.co.uk is the holding domain for the site. If you look at the main nav you can see a white border around the boxes. I've put some css in to use a black border, but that doesn't seem to work all around each box. Also, I can't seem to get the css right for the submenus. I want them to be the same background colour as the main nav and the text to be bold regardless of hover state. If they like the result I'd suggest they purchase the pro upgrade. Just wondered if you could help :) Thanks Neil