Modern CSS framework based on Flexbox

Automatically add a progress bar to your site.

A showcase of problems once hard or impossible to solve with CSS alone, now made trivially easy with Flexbox.

The package of IBM’s typeface, IBM Plex.

Delightful, performance-focused pure css loading animations.

A CSS only tooltip library for your lovely websites.

Create beautiful CSS3 powered animations in no time.

A curated collection of splendid gradients made in CSS3, .sketch and .PSD formats.

A strong, independent CSS Framework. Only 2.7KB minified & gzipped.

Floating Point Math Examples

Beautiful transformable icons built for the web.

CSS3 scroll animation library

⛔ currently unmaintained ⛔ A minimal JS library for showing & hiding things

A React modal with animations.

Growl-like notifications with an emphasis on icons

A pure CSS responsive navigation menu

wolf , Very Cool Responsive SASS Grid System.