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- # [postcss][postcss]-unique-selectors [][ci] [][npm] [][deps]
- > Ensure CSS selectors are unique.
- ## Install
- With [npm](https://npmjs.org/package/postcss-unique-selectors) do:
- ```
- npm install postcss-unique-selectors --save
- ```
- ## Example
- Selectors are sorted naturally, and deduplicated:
- ### Input
- ```css
- h1,h3,h2,h1 {
- color: red
- }
- ```
- ### Output
- ```css
- h1,h2,h3 {
- color: red
- }
- ```
- ## Usage
- See the [PostCSS documentation](https://github.com/postcss/postcss#usage) for
- examples for your environment.
- ## Contributing
- Pull requests are welcome. If you add functionality, then please add unit tests
- to cover it.
- ## License
- MIT © [Ben Briggs](http://beneb.info)
- [ci]: https://travis-ci.org/ben-eb/postcss-unique-selectors
- [deps]: https://gemnasium.com/ben-eb/postcss-unique-selectors
- [npm]: http://badge.fury.io/js/postcss-unique-selectors
- [postcss]: https://github.com/postcss/postcss
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