I have another question regarding the modification of the banner. I'm now trying to get the custom banner image to fill the entire upper header area (no padding, no margins). I've been messing around with some of the gantry CSS (such as in the gantry.css file), tho have not been able to figure out how to adjust this without adjusting the padding and margins for everything else too (the block attributes).
How can I adjust padding and margins for the header area only?