RT Álvaro Montoro
Rudolph (the red-nosed CSS reindeer)
Demo on @CodePen:
Video of the process:
https://codepen.io/alvaromontoro/full/VwMWWYY
https://www.youtube.com/watch?v=z_YcY01_qwQ

https://twitter.com/alvaro_montoro/status/1472601405538160648