Strange behaviour of the website for small screens / high zoom

I had some issues with my twitch stream and “solved” them by zooming into the website while having it on half of my screen. That made some exercises really difficult to read.

It is fine like mobile at 170%:

It goes bonkers at 130%:

Original 100%

I’m using Firefox 110.0.1 (64-bit) on Windows 11. Resolution is 2560x1440.

The issue here is really that mobile view isn’t supported (despite the mobile view showing fine). One the site is actually responsive, this problem at 130% should go away.