I deleted the cache several times and tested it with another browser.
Unfortunately, the menu does not change into a hamburger menu on small drives.
The round logo should be in the middle of the header. For smaller output devices, the position may move from the center to the left, leaving room for the menu in text form.
If the logo and menu no longer fit in a row, it should change into a hamburger menu. I've uploaded pictures that show what it looks like and what kind of behavior I'd like to have.
Could you please help me. You have backend access and you are welcome to make changes.