Image radius not working on image or wrapper


I’ve tried all sorts of stuff but my issue is that I’ve got all images set to a border radius of 0.5 rem but on this training page, the top left image is not rounding at the top! Arrg!

Here’s my share link.

And here’s my [Loom plea.] I mean video.
(Loom | Free Screen & Video Recording Software | Loom)