Design Utilities

Name That Color
https://chir.ag/projects/name-that-color/

Mode Palette Generator

https://codepen.io/luispadarotto/full/qBQjoOK

Gradient Generator

https://cssgradient.io/

Pure CSS Day/Night Toggle Switch

https://codepen.io/jasontyler/pen/qEXzOQ

Flexbox Froggy

https://codepip.com/games/flexbox-froggy/

The Greatest CSS-Tricks

https://css-tricks.com/books/greatest-css-tricks/full/