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1# [postcss][postcss]-unique-selectors
2
3> Ensure CSS selectors are unique.
4
5## Install
6
7With [npm](https://npmjs.org/package/postcss-unique-selectors) do:
8
9```
10npm install postcss-unique-selectors --save
11```
12
13## Example
14
15Selectors are sorted naturally, and deduplicated:
16
17### Input
18
19```css
20h1,h3,h2,h1 {
21 color: red
22}
23```
24
25### Output
26
27```css
28h1,h2,h3 {
29 color: red
30}
31```
32
33## Usage
34
35See the [PostCSS documentation](https://github.com/postcss/postcss#usage) for
36examples for your environment.
37
38## Contributors
39
40See [CONTRIBUTORS.md](https://github.com/cssnano/cssnano/blob/master/CONTRIBUTORS.md).
41
42## License
43
44MIT © [Ben Briggs](http://beneb.info)
45
46[postcss]: https://github.com/postcss/postcss
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