HTML (Dreamweaver) to WordPress

Hi,

I’m extremely new to this and I’m in need of a lot of help ASAP.
I’m making a website for a company and I’ve been doing it in HTML/CSS. However, they want it on WordPress. I’ve gotten the domain/server from them with the login info as admin.

I need to transfer what I’ve done onto WordPress but I have no idea how. I’ve looked up some sites but I’m really new to all this so I don’t really understand.

Can someone please help me with this step by step? I would really appreciate it!

-Ang