Darned Cross-Browser Compatibility

I've been having some fun playing web-designer today, but these browser issues just really bug me sometimes. I can get stuff that looks good in Safari and Mozilla, but then IE always just screws it all up. I'm trying to do it completely in CSS, so part of the problem may just be that there are things I don't know about that yet. But even when I know what I'm doing, the browsers just render things differently. The bane of every web-designer's existence, I guess. Sigh. But enough of that for now. I'll have plenty of time sitting in front of a computer when I go back to work tomorrow.