Animations

⭐ https://animista.net/play/text/pop-up/text-pop-up-top

⭐ https://animejs.com/ (JavaScript)

⭐ https://codemyui.com/tag/click-animation/

⭐ https://www.minimamente.com/project/magic/

⭐ http://vivify.mkcreative.cz/

https://css-tricks.com/css-animation-libraries/

https://animate.style/

https://ianlunn.github.io/Hover/

https://shakrmedia.github.io/tuesday/

https://tholman.com/obnoxious/

Loaders / Spinners

https://loading.io/css/

SVG

https://svgartista.net/

Gradients and colours

CSSGradients

Name that colour

Background patterns