Weird margin under body-element on website when viewed with Firefox 7

Question

My website that I'm currently working on have a problem in Firefox 7. A margin pushes the gradient in #wrapper up from the bottom and ruins the flow. I've reset the margin to 0 on body and html already and can't seem to find anything to explain this. Firebug tells me nothing of value on this case.

My code is here and you can look at the website yourself here

Answer 1

Just set the body height to 100%. This might help. And also add background-attachment:fixed; to avoid the background scrolling just in case your page scrolling.