Now using translateZ instead of z-index [1], to fix Safari-specific issue where Lecture Notes would disappear behind the Lecture Notes Index (side bar on wider screens)

[1] : https://stackoverflow.com/questions/20832531/mobile-safari-positionfixed-z-index-glitch-when-scrolling

Submitted by Elmer van Chastelet on 1 October 2024 at 08:56