Septera Header Image Position & Crop

Hello!

My header image is too tall to fit into the screen fully when it is full screen. I want the header image to retain full width no matter the screen size (which it currently does), and when it needs to overflow I want it to be positioned/vertically aligned on the bottom so that any part of the image that doesn’t show due to overflow begins at the top of the image. I’ve scoured the web, tried adding new CSS, created a child theme from it, and no changes I’ve attempted did the trick.

How can I make this change?

Thanks!

Website: 52.90.150.108