How is this possible with CSS only?!

css
pseudo class
:has()

https://beta.jimiwikman.se/resources/videos/professional/760_ways-of-working/development/frontend/how-is-this-possible-with-css-only-r394/

Followers

I’ve done reaction videos in the past where I looked at crazy codepens, and today, we’re starting a new series where I find one such codepen and see if I can understand how it was created, with a dive into the :has() pseudo-class, which is now supported in Chrome and Safari.