CSS Bed

cssbed.com

CSS Bed is a collection of classless CSS theme, it let you test each of them by effortlessly changing the stylesheet of the site. I am a big fan of classless CSS for small and static website (like this one), it reduce unnecessary complexity by not having to think about class at all and only concentrate on semantic HTML. Also modern framework provide CSS isolation wich mean class are not as much of a necessity to avoid colision between components.