I'm not sure if you're serious. First, there are going to be differences between header and footer styles, which means you're going to have to declare them onc

I'm not sure if you're serious. First, there are going to be differences between header and footer styles, which means you're going to have to declare them once as you say, and then at least one of them after that for the differences. Second, this offers the opportunity to do things only once, which is helpful for maintenance (though Firebug helps a lot, in my experience, in telling you exactly how you got this style).