# postcss-map-get > [PostCSS](https://github.com/postcss/postcss) plugin to transform SASS Function [map-get](http://sass-lang.com/documentation/Sass/Script/Functions.html#map_get-instance_method). [![Travis Build Status](https://img.shields.io/travis/Scrum/postcss-map-get/master.svg?style=flat-square&label=unix)](https://travis-ci.org/Scrum/postcss-map-get)[![node](https://img.shields.io/node/v/postcss-map-get.svg?maxAge=2592000&style=flat-square)]()[![npm version](https://img.shields.io/npm/v/postcss-map-get.svg?style=flat-square)](https://www.npmjs.com/package/postcss-map-get)[![Dependency Status](https://david-dm.org/scrum/postcss-map-get.svg?style=flat-square)](https://david-dm.org/scrum/postcss-map-get)[![XO code style](https://img.shields.io/badge/code_style-XO-5ed9c7.svg?style=flat-square)](https://github.com/sindresorhus/xo)[![Coveralls status](https://img.shields.io/coveralls/Scrum/postcss-map-get.svg?style=flat-square)](https://coveralls.io/r/Scrum/postcss-map-get) [![npm downloads](https://img.shields.io/npm/dm/postcss-map-get.svg?style=flat-square)](https://www.npmjs.com/package/postcss-map-get)[![npm](https://img.shields.io/npm/dt/postcss-map-get.svg?style=flat-square)](https://www.npmjs.com/package/postcss-map-get) ## Why? Adds the ability to use sass like Map Function [map-get](http://sass-lang.com/documentation/Sass/Script/Functions.html#map_get-instance_method). ## Install ```bash $ npm install postcss postcss-map-get ``` > **Note:** This project is compatible with node v8+ ## Usage ```js // Dependencies import fs from 'fs'; import postcss from 'postcss'; import mapGet from 'postcss-map-get'; // CSS to be processed var css = fs.readFileSync('css/input.css', 'utf8'); // Process CSS var output = postcss() .use(mapGet()) .process(css, { from: 'css/input.css' }) .css; console.log(output); ``` > Returns the value in a map associated with the given key. If the map doesn't have such a key, returns null. ## Example *input.css* ```css body { background: map-get(( body: #fff, main-red: #c53831, link-blue: #0592fb ) !default, body); min-width: map-get(( xxs: 0, xs: 576px, sm: 768px, md: 992px, lg: 1280px, xl: 1360px, xxl: 1600px ) !default, lg); max-width: 100%; } ``` *output.css* ```css body { background: #fff; min-width: 1280px; max-width: 100%; } ```