Header grows within allowed header area

Hello,

I have been digging for hours and haven’t managed to find anything to help me. I made a few modifications to my site this evening and somewhere along the way the header got messed up. I also updated the theme (Treeson), and I’m halfway wondering if that was the cause of the problem. When I upload the header image, which at is the recommended size, the image grows beyond the size of the space allotted and looks terrible. Oddly, when I right click on the header image and open the inspector, it shrinks to the correct size, but as soon as I exit out of the inspector it goes right back to being overgrown. How to I get the header image to be the size it is supposed to be? Any help is appreciated, this is driving me bonkers.

https://womencreateeverything.com/

Thanks