Nicky Case made a thing called Nutshell:
Nutshell is a tool to make “expandable, embeddable explanations” … This lets your readers learn what they need, just-in-time, always-in-context.
I really like the look and feel of it, especially the little animated colons.
<div>s with nothing to help them be focusable and interactive.
I did a PR to help a tiny bit and to kinda test the appetite for fixing it up. Nicky kinda indicated they might not be into PRs in general unless it’s a translation or bug fix, so remains to be seen if an accessibility issue would be considered a bug or not.