Want home page to look like this…

Basically want to make my home page here: https://www.jeremyrandalljohnston.com

look like the home page here: https://www.jeremyrandalljohnsto.wix.com/jeremy

minus the background design. Just wanting the home page to be one big static image in the body, but can’t seem to adjust it right. I am also brand new to CSS so don’t want to be too much of a bother but any help is greatly appreciated.

Cheers, Jeremy