You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
|
|
# PostCSS Normalize [<img src="https://postcss.github.io/postcss/logo.svg" alt="PostCSS" width="90" height="90" align="right">][postcss]
[![NPM Version][npm-img]][npm-url] [![Build Status][cli-img]][cli-url] [![Support Chat][git-img]][git-url]
[PostCSS Normalize] lets you use the parts of [normalize.css] or [sanitize.css] that you need from your [browserslist].
```css @import "normalize.css"; ```
```css @import "sanitize.css"; ```
**PostCSS Normalize** uses a non-opinionated version of [normalize.css], but an opinionated version may also be used.
```css @import "normalize.css/opinionated.css"; ```
### Examples
Here is a sample of what **normalize.css** looks like when the **browserslist** is `ie >= 9`:
```css /** * Add the correct display in IE 9-. */
audio, video { display: inline-block; }
/** * Remove the border on images inside links in IE 10-. */
img { border-style: none; } ```
And here is the same sample when the **browserslist** is `ie >= 10`:
```css /** * Remove the border on images inside links in IE 10-. */
img { border-style: none; } ```
## Usage
Add [PostCSS Normalize] to your project:
```bash npm install postcss-normalize --save-dev ```
Add a [browserslist] entry in `package.json`:
```json { "browserslist": "last 2 versions" } ```
Use **PostCSS Normalize** to process your CSS:
```js const postcssNormalize = require('postcss-normalize')
postcssNormalize.process(YOUR_CSS /*, processOptions, pluginOptions */) ```
Or use it as a [PostCSS] plugin:
```js const postcss = require('postcss') const postcssNormalize = require('postcss-normalize')
postcss([ postcssNormalize(/* pluginOptions */) ]).process(YOUR_CSS /*, processOptions */) ```
**PostCSS Normalize** runs in all Node environments, with special instructions for:
| [Node](INSTALL.md#node) | [PostCSS CLI](INSTALL.md#postcss-cli) | [Webpack](INSTALL.md#webpack) | [Create React App](INSTALL.md#create-react-app) | [Gulp](INSTALL.md#gulp) | [Grunt](INSTALL.md#grunt) | | --- | --- | --- | --- | --- | --- |
## PostCSS Import Usage
**PostCSS Normalize** includes a `postcssImport` function to configure [PostCSS Import] and allow you to continue using the `@import` syntax.
```js const postcss = require('postcss') const postcssImport = require('postcss-import') const postcssNormalize = require('postcss-normalize')
postcss([ postcssImport( postcssNormalize( /* pluginOptions (for PostCSS Normalize) */ ).postcssImport( /* pluginOptions (for PostCSS Import) */ ) ) ]) // now you can use @import "normalize.css", etc. again ```
Alternatively, use `@import-normalize` or `@import-sanitize` to avoid conflicts with `@import` transforms.
```pcss @import-normalize; ```
```pcss @import-normalize "opinionated.css"; ```
```pcss @import-sanitize; ```
## Options
### allowDuplicates
The `allowDuplicates` option determines whether multiple, duplicate insertions of CSS libraries are allowed. By default, duplicate libraries are omitted.
```js postcssNormalize({ allowDuplicates: true }) ```
### forceImport
The `forceImport` option defines CSS libraries that will be inserted at the beginning of the CSS file. Unless overriden by `allowDuplicates`, duplicate CSS libraries would still be omitted.
```js postcssNormalize({ forceImport: true }) ```
Specific CSS libraries may be defined.
```js postcssNormalize({ forceImport: 'sanitize.css' }) ```
### browsers
The `browsers` option defines an override of the project’s **browserslist** for **PostCSS Normalize**. This option should be avoided in leui of a browserslist file.
```js postcssNormalize({ browsers: 'last 2 versions' }) ```
## CSS Libraries
**PostCSS Normalize** can include [normalize.css] or [sanitize.css] and configure either with the following combinations:
```css @import "normalize"; /* also, @import "normalize.css" */ @import "normalize/opinionated"; /* also, @import "normalize.css/opinionated.css", @import "normalize.css/*" */ @import "sanitize"; /* also, @import "sanitize.css" */ @import "sanitize/forms"; /* also, @import "sanitize.css/forms.css" */ @import "sanitize/typography"; /* also, @import "sanitize.css/typography.css" */ @import "sanitize/page"; /* also, @import "sanitize.css/page.css" */ @import "sanitize/*"; /* also, @import "sanitize.css/*" (sanitize + all additions) */ ```
[cli-img]: https://img.shields.io/travis/csstools/postcss-normalize/master.svg [cli-url]: https://travis-ci.org/csstools/postcss-normalize [git-img]: https://img.shields.io/badge/support-chat-blue.svg [git-url]: https://gitter.im/postcss/postcss [npm-img]: https://img.shields.io/npm/v/postcss-normalize.svg [npm-url]: https://www.npmjs.com/package/postcss-normalize
[browserslist]: http://browserl.ist/ [CSS Libraries]: #css-libraries [normalize.css]: https://github.com/csstools/normalize.css [Options]: #options [PostCSS]: https://github.com/postcss/postcss [PostCSS Import]: https://github.com/postcss/postcss-import [PostCSS Import Usage]: #postcss-import-usage [PostCSS Normalize]: https://github.com/csstools/postcss-normalize [sanitize.css]: https://github.com/csstools/sanitize.css
|