how do i use the css thing?i tried using a generator but i can't figure out how to do it

thank you all for the adds
lol

uu

its my friends bdayuh
happy bday tp himk,mmmmmm
anyways thanks for the adds
i'm going to teach myself how to use this so i can customize my page

this is for my cat named lua. she's a good cat and shes very cute i love her