A modern alternative to CSS resets

Modern CSS framework based on Flexbox

A collection of loading indicators animated with CSS

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

Tomorrow Theme

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

🎏 A curated collection of all country flags in SVG — plus the CSS for easier integration

Delightful, performance-focused pure css loading animations.

A CSS only tooltip library for your lovely websites.

Smoothly transitions numbers with ease. #hubspot-open-source

Create beautiful CSS3 powered animations in no time.

Low-level CSS Toolkit – the original Functional/Utility/Atomic CSS library

An experiment using the peerflix module of nodejs and connecting a bunch of APIs.

Powerful, scalable, Sass-based, BEM, OOCSS framework.

HTML5 mockups of popular devices, to showcase your portfolio and spice up your website.

Friendlier HTML form controls with a little CSS magic.

Devicons - An iconic font made for developers

Data entry can be beautiful

A library for creating dropdowns and other floating elements. #hubspot-open-source

Typeface for setting text in many sizes, weights, and languages. Designed to complement Source Sans.

Common reasons your HTML and CSS may be fucked.

Single-page shop

Icon font and Sass-based construction kit for Stackicons-Social, which supports multiple button shapes and a unique "multi-color" option in CSS for over 60 social brands.

MailDrop is an open-source, scalable, high-performance version of Mailinator.

A complete CSS framework for Stylus

MacGap website

A set of css utilities for constructing beautiful responsive buttons

A clean, Mailbox-inspired theme for Nylas N1 🌲

An (almost) flat theme for Atom in shades of gunmetal and medium-contrast colors

Complementing syntax theme for the Neutron UI Atom package