I spend so much of my life trying to fix the stupidity that is the way Internet Explorer renders elements. I've even served different content based upon the user agent, and it is just a nightmare. The idea of just saying "screw it, let me just redo this from the start the way I want!" has never occurred to me. From a designer's approach, I kind of like it.

But as regards to my vote... Then I vote to increase the margin size to somewhere in the 4em to 6em range.