Sticky positioning is one of those CSS features that’s pretty delicate and can be negated by a lot of things, so here’s another one to add to your mental catalog: Sticky elements don’t play nicely if they have to coordinate with other elements to make up a combined height, like `100vh`. Philip Braunen explores why this happens and presents a solution to fix it.

How do you point out things in a UI? Are Arc Boosts the end of the web? What do you think of VR and AR / Vision Pro and Meta Quest? And what do you do when the sticky header goes missing?