Generally the whole copy and paste has been working for me, the odd colour change there I can do, but for now I'm still very much a newbie here (but willing to learn).
I've been trying to make this theme work:
Unfortunately, when it comes to saving, the preview before it only shows a single column, no format blog.
Thanks for any heads up you can give. Apologies for this newbie post, I know I shouldn't even be asking about CSS editing as that's like for pros.