**modern-normalize**

Normalize browsers' default style.

**ress**

Modern CSS reset.

**Natural Selection**

Collection of best-practice CSS selectors.

**Pico.css**

Elegant styles for all native HTML elements, dark mode automatically enabled.

**MVP.css**

Minimalist stylesheet for HTML elements.

**sakura**

Minimal classless CSS framework/theme.

**Simple.css**

Lightweight, classless CSS framework.

**Tacit**

CSS framework for dummies, without classes.

**Pure**

Set of small, responsive CSS modules that you can use in every web project.

**Picnic CSS**

Lightweight and beautiful library.

**Chota**

Really small CSS framework.

**Bootstrap**

The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.

**Bulma**

Modern CSS framework based on Flexbox.

**Foundation**

The most advanced responsive front-end framework in the world.

**UIkit**

Lightweight and modular front-end framework for developing fast and powerful web interfaces.

**Primer**

CSS framework that powers GitHub's front-end design.

**Carbon Components**

Component library behind IBM's Carbon Design System.

**U.S. Web Design System**

Components used by U.S. federal government websites.

**Fomantic-UI**

Build beautiful websites fast, with concise HTML, intuitive javascript, and simplified debugging.

**Cirrus**

Component and utility centric SCSS framework designed for rapid prototyping.

**Vanilla Framework**

Simple, extensible CSS framework. Written by the Canonical Web Team.

**PatternFly**

UI framework for enterprise web applications.

**Stacks**

UI components used by Stack Overflow.

**HiQ**

Simple CSS foundation with responsive typography and input styling.

**Beer CSS**

Build material design interfaces in record time without stress for devs.

**Materialize**

Responsive front-end library based on Google's Material Design.

**Tailwind CSS**

Utility-first CSS framework for rapid UI development.

**Open Props**

CSS custom properties to help accelerate adaptive and consistent design.

**NES.css**

NES-style CSS Framework.

**98.css**

CSS library for building interfaces that look like Windows 98.

**Tufte CSS**

Style your webpage like Edward Tufte’s handouts.

**Gutenberg**

Modern framework to print the web correctly.

**System.css**

Design system for building retro Apple interfaces.

**XP.css**

CSS library for building interfaces that look like Windows XP.

**TuiCss**

Library to create MS-DOS interfaces.

**7.css**

CSS library for building interfaces that look like Windows 7.

**Bojler**

Email framework for developing responsive and lightweight email templates.

**Orbit**

CSS framework designed for building any kind of radial UI.

**Semantic UI**

User interface is the language of the web.

**Material Components Web**

Modular and customizable Material Design UI components for the web.

**Tachyons**

Quickly build and design new UI without writing CSS.

**Bourbon**

Lightweight Sass tool set.

**Water.css**

Just-add-CSS collection of styles to make simple websites just a little nicer.

**sanitize.css**

The best-practices CSS foundation.

**modern-css-reset**

Tiny little reset that you can use as the basis of your CSS projects.

**minireset.css**

Tiny modern CSS reset.

**CSS Remedy**

Start your project with a remedy for the technical debt of CSS.

**Blaze UI**

Open source modular toolkit providing great structure for building websites quickly with a scalable and maintainable foundation.

**Concise CSS**

Give up the bloat. Stop tripping over your classes. Be concise.

**Responsive Boilerplate**

Powerful, accessible, developer friendly framework for building responsive websites.