Resize Header with Logo Left Menu Below Option

Hi. I am using the logo left menu below option and need help expanding the height of the logo area. Normally i would do it like this `#header_main {height: enter height;}’ but when using the header layout I have chosen, that doesn’t work. Plus, I have the logo area set to #fff and the menu background is set to another color… i want to increase the height of the logo area only, without impacting the position or height of the different colored menu background.

see here: http://mindsparklabz.com/dev/brock-law