[chrismorgan]

Honestly, I feel that `bottom: -32px` and `calc(100% - 32px)` might be easier to understand than `height: 200%` and `50%`. (Yeah, for early teaching I might step back from using `inset`.) It does require the one extra concept of calc(), but it’s exact and feels slightly more easily explicable than how 50% of 200% is back to 100%. The fact that the number 32 would be present in both makes it easier to track, whereas the fact that 200% and 50% are inverses is pretty easily overlooked.