The seed swap map card needs a small “Today” pin that stays in its upper-right corner. The completed styles create a positioning context on the card and then place the pin inside it.
.map-card has position: relative, which makes it the reference box. .pickup-pin has position: absolute with top and right offsets, so it leaves normal flow and hugs that corner.
Checkpoint: the orange pin appears over the upper-right edge of the map card.
Change .pickup-pin right from 12px to 48px, preview the move, then restore 12px. Continue to the exercise when the pin is back at the corner.
An absolutely positioned child uses the nearest positioned ancestor.