I've just submitted the final copy of my repository for riverdex.com, my entry for Rails Rumble 2008. I'll be updating this post with some additional background info and explanation later, but for now... enjoy the site.

I recently learned an excellent general rule for CSS. Anytime you float anything, you should also apply a display:inline style rule on it as well. This fixes the double-margin bug in Internet Explorer and it has no effect on other browsers.