Hi Paul,
Thank you. I think that's what I have been doing but I hit a limit at how big I can make the image/circle. I'm not sure how to get past those boundaries. I'd like it to take up most of the one half of the page, almost like a split screen, but with the rounded shape.
I think you should be able to see this?
https://frog-blueberry-fgtj.squarespace.com