Sass is a stylesheet language with a main implementation in Ruby. It is an extension of CSS that makes improvements to the old stylesheet format, such as being able to declare variables and using a cleaner nesting syntax.
Minimal CSS Framework for semantic HTML
List of awesome CSS frameworks in 2025
[no longer maintained]
Chalk is a high quality, completely customizable, performant and 100% free Jekyll blog theme.
A lightweight front-end framework for building accessible, bespoke interfaces.
Sierra SCSS library
Flexible-Jekyll is a simple and clean theme for Jekyll
Superclean, powerful, responsive, Sass-based, BEM-syntax CSS grid system
An easy to use flexbox grid system.
A basically pitch black theme for Discord. Lights out, baby!
A bare bones responsive SCSS boilerplate for web designers
This git repository consists of a collection of 50 carefully curated frontend projects that showcase your skills and creativity as a frontend developer. Each project is unique and visually stunning, demonstrating your proficiency in a wide range of technologies and design principles
Created by Hampton Catlin, Natalie Weizenbaum, Chris Eppstein
Released November 28, 2006