The nth-child pseudo selector is a nice feature in CSS3. Well, most of the things in CSS3 are pretty sweet. Chris Wanstrath has a good post on the nth-child selector, and I'd suggest reading it for a bit more in depth on what the nth-child selector actually does, as I just cover getting the same effect in all browsers. Unfortunately, while Internet Explorer does support some of the CSS3 stuff, it doesn't support a bunch of them.aspx) either. (Di…