In my site I have split up the left and right part in 40% and 60% width. In the right part I added an outerbox of 80% width and in that the contentdiv with a margin 0f 8px.
In Mozilla everything looks fine, but in IE the content keeps aligned to the left, not showing a margin of 8px. I tried all kinds of things, but can't get it to work. Also if you scroll down a page with some images on them you can see that there is a strange white field stretching underneath the images, as wide as the 80% outerbox, covering the right and left borders for a moment. Hovering over the image makes that field dissapear.
It must be some css thing that IE can't cope with, or a mistake on my part in the css or markup.
(I realise these are difficult things for 'outsiders' to check... :) )
You can reach my (under construction) site by clicking on my username...