Fun fact: The #github code viewer/editor breaks completely if used with a non-100% zoom in #Firefox. Everything that is displayed above the code (line annotations, highlights, code context) is some % off. Practically unusable. But only if you load the page with a zoom, not if you load it at 100% and then zoom. So.. they know how to deal with page zoom, they just decided not to do it on page load.

The #Codeberg viewer/editor works flawlessly.