Dawn theme desktop image banner cropped

[JimmyJT]

Hi, 

My banner image gets cropped on desktop view. 
It looks fine on the mobile page. 

I'd like to have the same look on the desktop version as it is at the moment on the mobile version or at least as similar as possible. 
I can't seem to figure it out! 

Would be much appreciated if there is someone that can help me out 🙂 

Store: https://sterrenstof.store/
I removed the password. 

Thanks!