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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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