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backend/frontend/node_modules/postcss-nesting/README.md

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+# PostCSS Nesting [<img src="https://postcss.github.io/postcss/logo.svg" alt="PostCSS Logo" width="90" height="90" align="right">][postcss]
+
+[![NPM Version][npm-img]][npm-url]
+[![CSS Standard Status][css-img]][css-url]
+[![Build Status][cli-img]][cli-url]
+[![Windows Build Status][win-img]][win-url]
+[![Support Chat][git-img]][git-url]
+
+[PostCSS Nesting] lets you nest style rules inside each other, following the
+[CSS Nesting] specification.
+
+```pcss
+a, b {
+  color: red;
+
+  & c, & d {
+    color: white;
+  }
+}
+
+/* becomes */
+
+a, b {
+  color: red;
+}
+
+a c, a d, b c, b d {
+  color: white;
+}
+```
+
+## Usage
+
+Add [PostCSS Nesting] to your build tool:
+
+```bash
+npm install postcss-nesting --save-dev
+```
+
+#### Node
+
+Use [PostCSS Nesting] to process your CSS:
+
+```js
+import postcssNesting from 'postcss-nesting';
+
+postcssNesting.process(YOUR_CSS);
+```
+
+#### PostCSS
+
+Add [PostCSS] to your build tool:
+
+```bash
+npm install postcss --save-dev
+```
+
+Use [PostCSS Nesting] as a plugin:
+
+```js
+import postcss from 'gulp-postcss';
+import postcssNesting from 'postcss-nesting';
+
+postcss([
+  postcssNesting(/* options */)
+]).process(YOUR_CSS);
+```
+
+#### Webpack
+
+Add [PostCSS Loader] to your build tool:
+
+```bash
+npm install postcss-loader --save-dev
+```
+
+Use [PostCSS Nesting] in your Webpack configuration:
+
+```js
+import postcssNesting from 'postcss-nesting';
+
+export default {
+  module: {
+    rules: [
+      {
+        test: /\.css$/,
+        use: [
+          'style-loader',
+          { loader: 'css-loader', options: { importLoaders: 1 } },
+          { loader: 'postcss-loader', options: {
+            ident: 'postcss',
+            plugins: () => [
+              postcssNesting(/* options */)
+            ]
+          } }
+        ]
+      }
+    ]
+  }
+}
+```
+
+#### Gulp
+
+Add [Gulp PostCSS] to your build tool:
+
+```bash
+npm install gulp-postcss --save-dev
+```
+
+Use [PostCSS Nesting] in your Gulpfile:
+
+```js
+import postcss from 'gulp-postcss';
+import postcssNesting from 'postcss-nesting';
+
+gulp.task('css', () => gulp.src('./src/*.css').pipe(
+  postcss([
+    postcssNesting(/* options */)
+  ])
+).pipe(
+  gulp.dest('.')
+));
+```
+
+#### Grunt
+
+Add [Grunt PostCSS] to your build tool:
+
+```bash
+npm install grunt-postcss --save-dev
+```
+
+Use [PostCSS Nesting] in your Gruntfile:
+
+```js
+import postcssNesting from 'postcss-nesting';
+
+grunt.loadNpmTasks('grunt-postcss');
+
+grunt.initConfig({
+  postcss: {
+    options: {
+      use: [
+       postcssNesting(/* options */)
+      ]
+    },
+    dist: {
+      src: '*.css'
+    }
+  }
+});
+```
+
+[cli-url]: https://travis-ci.org/jonathantneal/postcss-nesting
+[cli-img]: https://img.shields.io/travis/jonathantneal/postcss-nesting.svg
+[css-img]: https://jonathantneal.github.io/cssdb/badge/nesting-rules.svg
+[css-url]: https://jonathantneal.github.io/cssdb/#nesting-rules
+[git-url]: https://gitter.im/postcss/postcss
+[git-img]: https://img.shields.io/badge/chat-gitter-blue.svg
+[npm-url]: https://www.npmjs.com/package/postcss-nesting
+[npm-img]: https://img.shields.io/npm/v/postcss-nesting.svg
+[win-img]: https://img.shields.io/appveyor/ci/jonathantneal/postcss-nesting.svg
+[win-url]: https://ci.appveyor.com/project/jonathantneal/postcss-nesting
+
+[CSS Nesting]: http://tabatkins.github.io/specs/css-nesting/
+[Gulp PostCSS]: https://github.com/postcss/gulp-postcss
+[Grunt PostCSS]: https://github.com/nDmitry/grunt-postcss
+[PostCSS]: https://github.com/postcss/postcss
+[PostCSS Loader]: https://github.com/postcss/postcss-loader
+[PostCSS Nesting]: https://github.com/jonathantneal/postcss-nesting