Thanks for your answer.
On this page it’s correct now: https://www.loom.com/i/528bb85a26074bca9aad82aa5cce1d8b
But on all other pages not yet:
https://www.loom.com/i/e80b618a22894798a17ecdb4915ab7b5
https://www.loom.com/i/56e990718155427a89b6f6959d811f94
Can this only be done with CSS? Is there no institution that can control this?