PLEASE HELP – Reverting Back from changes i made

Hey guys, so I took on the role of giving the homepage of a website a facelift, I stuffed it all up and bit off way more than i can chew, I want to know how I can revert back to how it was prior to me changing it.

I’ve been ripping my hair out because I can’t replicated how it looked prior to me stuffing it up, I really need to revert it back to how it was.

If someone could please help me fix up the mess i made I’d be beyond appreciated.

This is the website: http://www.theevertonforum.co.uk/

Thanks,

Josh.