Hi there,
Having 2 elements of the same ID will cause jump-link issues.
I’ve inspected the page and you have 2 Container blocks having the same “nachhaltigkeit” ID.
I understand why you need 2 (for swapping layouts between viewports) and you can keep it. We just need to modify the structure a bit.
Currently you have this:
> Container Block
>> Container block with “nachhaltigkeit” ID for desktop.
>> Container block with “nachhaltigkeit” ID for mobile.
Try nesting the Container Blocks this way:
> Container Block
>> Container Block (add the “nachhaltigkeit” ID here)
>>> Container block for desktop.
>>> Container block for mobile.
You then test it again. 😀