There is a link in the More system details list (http://www.ransomemultimedia.com) You don't give Fi

There is a link in the More system details list (http://www.ransomemultimedia.com)

You don't give Firefox much room for a scroll bar with a height:18px.
So you probably won't see much if Firefox did add a scroll bar.
The DIV #footer can also use a style clear:both