I see you're using a code from cy. I assume you got them from that one post cy made years ago? Those only work for Toyhou.se Legacy since it was from the times where toyhou.se had a different coding!
CSS is also just for Premium users and is not pasted into the box where you enter your info anyway. EDIT If you want a userprofile I can recommend Wicked. She has some really nice ones for free even! Just look at the "User Templates" section.