So I started working on a site last night but for whatever reason, I cannot get it to display properly in IE. Mozilla seems to render it perfectly but after I finished getting everything working properly and W3C certified, I checked in the site in IE and noticed that it doesn't display at all like it should. Any suggestions would be greatly appreciated.

http://www.mydoor.org/sigma

BTW: I know that the greek letters don't display properly in the title, my fault heh

Change the border-bottom of container2 to border-top. Or, you could add a height to container2 (but that's more doing...)