So, I've fixed up this website, but I'm having one MAJOR problem: the site shows up on a PC but not on a Mac. Can you guys help me debug this so everything works correctly?

http://paperdollband.com/newindex

Edit: So I figured out that it was me trying to use absolute positioning and relative positioning, and one of those two isn't recognized on Macs. But I still need help positioning this iframe. Any help is greatly appreciated.

I've never heard of Macs not recognizing positioning. That's usually a Microsoft problem. But why not just use margin:auto; if you're trying to center it?

ODD! just use more universal coding. just troublshoot.
try changing stuff. like instead of margin-left:#; use margin: 0 0 0 #px;

ya dig?

I think I've got it about right now, thank goodness.

Edit: Troubleshooting helped. I'm going to close this now.