On Firefox for Android the page suddenly jumped halfway down when I tried to scroll. Looks like you've implemented your own scrollbar which overrides the browser?
Why go to archive.ph, though, when you can go directly to https://melsloop.com/docs/mels-hack-the-missing-bits ? - should work nicely on mobile.
Though most of the time I encounter such nonsense, I just close the tab and move on. There is rarely good content behind it.