If you would like to have a set of F REE web forms styled using CSS, head on over to CSS Globe to download the set of five that are by Alen Grakalic. He says:
In this collection I used my typical form markup. I always use FIELDSET and LEGEND elements although I sometimes hide them. I find FIELDSET element to be very useful in presentation, because I have an extra element without jeopardizing semantics. i.e. I can combine FORM and FIELDSET to achieve double backgrounds, or use them for vertical “sliding-door” as I did in my first example.