[SOLVED] Custom Top level menu size + span the menu accross the width of the page

First, I'd like to thank you for the wonderful theme! This theme is the most customizable theme that I've ever tried till date. And the support from developers is awesome!

Now, trying to customize my site, I'm running into small issues (rather my requirement). I'd like my menu to have a custom width. i.e., menu size not adjustable based on the links inside, but a menu that would span accross the width of my page. Something like the one below:



Searched around the forums and couldn't find anything that helpful.

I'm trying to figure out which file that I would need to edit and which line, but with no joy. I'm not a programmer or a developer by nature/profession and that leaves me unarmed. Hope someone here can help me!