CSS places items offscreen on certain desktop viewport sizes

[pushfoo]

Steps to replicate

1. Go to https://support.system76.com/articles/audio/
2. Set viewport width of around 1237px to 1035px, height is full size 971px

Screenshots + Browser Info

Chromium

Version 116.0.5845.180 (Official Build) built on Debian 11.7, running on Debian 11.6 (64-bit)

Firefox ESR

102.15.1esr (64-bit)