Thanks for the heads up. The navigation header does not collapse as I never liked hamburger menus but it should be more than two lines. Works more than that on my iPhone 16. What size is yours? I will pull it up in the Firefox simulator next week and try to make it better.
We recently updated the design. This is a very old site so it has some quirks in the design for sure.
Android Firefox here, top nav takes up 1/3rd of the viewport
Same. So much spacing between the 3 lines. If they want to keep that huge header I'd suggest it gracefully entirely disappear when scrolling down and reappear when scrolling up.