...but I have a layout which I thought I'd make a code for. But when I tested it, it was very messed up. Could someone please help me out?

Theres a tutorial for making/coding layouts here (http://www.quasigeek.net/~rewritable/div_layout.html). If that’s not what you meant or something, be more specific it's hard to know how your layout is messed up if you don't show it.