Ok... to be honest I should have seen this coming. But as I was designing my website I decided to test it out (test.weblup.net) in IE and Firefox. If you test it out yourself you can see how different they look. Well I'm not sure how to deal with it exactly. I'm still somewhat new to HTML and it's cross-compatibility. I'm still trying to learn a lot. You can see all the CSS here (I just thought it was a lot to copy and paste):
So what exactly needs to be changed? Also if you want it would be nice if you gave me a feedback on how you think the CSS looks so far. It would be very helpful to know whether I'm on the right track right now so far.