Reposting this from last night with a ⚠ motion warning.
Recreated a Henning Lederer animation with a single div and CSS box-shadow. Not very performant, so probably not a thing you should do!
@CodePen: codepen.io/lynnandtonic/pen/VwamVBp
Video description: a square with inlaid concentric squares whose shadows animate to look like an endless, moving hallway
Lynn Fisher
@lynnandtonic