# [postcss][postcss]-discard-empty > Discard empty rules and values with PostCSS. ## Install With [npm](https://npmjs.org/package/postcss-discard-empty) do: ``` npm install postcss-discard-empty --save ``` ## Example For more examples see the [tests](src/__tests__/index.js). ### Input ```css @font-face; h1 {} {color:blue} h2 {color:} h3 {color:red} ``` ### Output ```css h3 {color:red} ``` ## Usage See the [PostCSS documentation](https://github.com/postcss/postcss#usage) for examples for your environment. ## Contributors See [CONTRIBUTORS.md](https://github.com/cssnano/cssnano/blob/master/CONTRIBUTORS.md). ## License MIT © [Ben Briggs](http://beneb.info) [postcss]: https://github.com/postcss/postcss