csstools

A best-practices CSS foundation

Convert modern CSS into something browsers understand

Use Sass-like markup in your CSS

PostCSS Tools and Plugins

Magically generate all the @font-face rules

Use the parts of normalize.css (or sanitize.css) you need from your browserslist

Write SVGs directly in CSS

Easily create and maintain style guides using CSS comments

A cross-browser CSS foundation

A database of staged CSS features

Use the native system font of the OS running the browser

Nest style rules inside each other

Use Custom Media Queries in CSS, following the CSS Media Queries specification

Use advanced shorthand properties in CSS

Compile CSS compatible with old Internet Explorer

Fix mistakes in the design of CSS itself

Use Sass as a PostCSS plugin

Use Sass-like variables, conditionals, and iterators in CSS

Use logical properties and flow-relative values in CSS

Use Custom Selectors in CSS

Configure PostCSS in Create React App without ejecting

Use CSS Typed Object Model in the browser

Use light or dark color themes in CSS

Modify colors using the color-mod() function in CSS

Support for modern and experimental CSS within Visual Studio Code

A stylelint rule to catch usage of unknown custom properties

Enforce usage of logical properties and values in CSS

Tokenize CSS according to the CSS Syntax

Inline sugary @import statements in CSS

CSS Parser

Use conic gradients in your CSS files

Check CSS for WCAG color contrast compliance

Use the extend at-rule and functional selectors in CSS

Use the :focus-visible pseudo-selector in CSS

Use env() variables in CSS

Enforce nesting when it is possible in CSS