Front Page Different Than Other Pages — Help

Hey everyone,

If you look at my site utrippin.net the front page has a nice white border around the content and menu bar. But, on all the other pages the border isn’t there, and I can’t seem to find a way to add it, so they look weird. I’ve been staring at the CSS for hours

Firstly — why is my front page different than the other pages? I’m confused about that.

Secondly — is there a way I can make the formatting of the other pages look like the front page?

I’m using the twenty ten theme, and I’ve been editing the css.

Please help if you can. Thanks very much