Looking at this very page where I am typing this post, the "Welcome to the TalkGraphics.com." header nicely auto-sizes to the full width of the browser automatically. Can I do that for objects such as headers and footers in my WD7 site?

Looking at it in a different way, what I want is my web pages to fill the entire width of the user's browser, rather than sitting in the middle with a (background) border on the left and right.

TIA