https://codepen.io/shailaO07/full/gOwdZMy
https://codepen.io/chrisgannon/full/bGwMGMw
https://jazzkeys.plan8.co/
https://codepen.io/uchardon/pen/OJPpaPw
https://codepen.io/devben/pen/jFnKD
https://codepen.io/shshaw/pen/Wyoomm
https://thinker3197.github.io/progressively/
https://connoratherton.com/loaders
