Remove Featured image Zoom

Hello! I need help with my featured image. I read a lot in the documentation and this forum but found no solution.

My featured image is zoomed in on the desktop version so that it is blurry. In the customizer I can see the image perfectly and zoomed out but on the live site it is zoomed in. How to prevent that?

My custom css to remove the zoom on mobile:
@media (max-width: 768px) {
.page-header {
min-height: 350px !important;
} }

When I use that code on desktop (remove @media) it only crops the image from below but doesnt remove the zoom. Strange that it zooms out on mobile with the css but not on desktop… Help appreciated!

The page I need help with: [log in to see the link]