A general tip that may make things worse in the short term but save oodles of heartache later, would be to remove the display:table-cell from cont_center (and indeed any others that you may find). Internet Explorer doesn't recognize it, so as long as it's there and recognized by the other browsers, they're going to be working differently to IE. It's generally better to find one solution to the layout issues that works cross-browser. Otherwise you can spend ages fixing it in camp only to find it's broken in the other. Fix it there and find it's broken again, back where you started.