Different css for Firefox and IE

Hi all!

I’ve tried to change my css for falbum to work in Firefox (really bad codes btw, but it works at least), but it is not correct in IE now.

1. Can I make different stylesheets for Firefox/IE?

2. What do I have to do to tell the browser how to load the correct one?

3. Does anyone have a better css which will work for both browsers? And make my gallery look much better…

Thank you so much for any replies, I am new to this…

My gallery: http://www.kenta.no/galleri