🍿 A cross-browser library of CSS animations. As easy to use as an easy thing.

Iconic font aggregator, collection, & patcher. 3,600+ icons, 50+ patched fonts: Hack, Source Code Pro, more. Glyph collections: Font Awesome, Material Design Icons, Octicons, & more

A modern alternative to CSS resets

Modern CSS framework based on Flexbox

Monospaced font family for user interface and coding environments

Skeleton: A Dead Simple, Responsive Boilerplate for Mobile-Friendly Development

Automatically add a progress bar to your site.

Build mobile apps with simple HTML, CSS, and JavaScript components.

Tomorrow Theme

Spectre.css - A Lightweight, Responsive and Modern CSS Framework

Inactive project – please visit https://themeshaper.com/block-themes/ to learn more about the future of WordPress themes with Block Themes.

This repo is archived. Thanks!

The fastest way to build beautiful Electron apps using simple HTML and CSS

Dark GitHub style

List of awesome CSS frameworks in 2026

Smarter defaults for colors on the web.

An easy-to-read, quick reference for PHP best practices, accepted coding standards, and links to authoritative tutorials around the Web

A spinning activity indicator

Easing Functions Cheat Sheet

Automatically display online/offline indication to your users

A CSS only tooltip library for your lovely websites.

The JavaScript Way book

A specification for building JSON APIs

215 Weather Themed Icons and CSS

A modern dialog library which is highly configurable and easy to style. #hubspot-open-source

Compass is no longer actively maintained. Compass is a Stylesheet Authoring Environment that makes your website design simpler to implement and easier to maintain.

Create beautiful CSS3 powered animations in no time.

A best-practices CSS foundation

Unobtrusive page transitions with jQuery.

Get the rocks out of your socks! Assemble makes you fast at web development! Used by thousands of projects for rapid prototyping, themes, scaffolds, boilerplates, e-books, UI components, API docume…