Spectre.css
A lightweight, responsive and modern CSS framework
...Spectre only includes modern base styles, responsive layout system, CSS components and utilities, and it can be modified for your project with Sass/Scss compiler. There are 5 ways to get started with Spectre CSS framework in your projects. You can either manually install or use NPM, Yarn and Bower. Spectre uses Autoprefixer to make most styles compatible with earlier browsers and Normalize.css for CSS resets. Spectre is designed for modern browsers.