“Create Beautiful, Smooth Gradients” I love that the tool helps you avoid the “gray zones”
CSS
SmolCSS
“Minimal snippets for modern CSS layouts and components” – very handy
7 Uses for CSS Custom Properties
CSS Grid Layout Terminology, Explained
Grid Layout – a Collection by Gabi on CodePen
Some great examples in here.
text-spinners
“Pure text, CSS only, font independent, inline loading indicators”