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Style React Native components using CSS, PostCSS, Sass, Less or Stylus.

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React Native CSS modules

Style React Native components using CSS, PostCSS, Sass, Less or Stylus.

Quick links: FeaturesDocumentationExample AppsDevelopmentFAQ

Features

Examples

Using React Native CSS modules works almost the same way as using CSS modules with a Web React project, but there are some limitations. There is no support complex CSS selectors. Only simple CSS class selector (e.g. .myClass) is supported. React Native also only supports a subset of browser's CSS properties for styling.

For more info about the differences between using CSS modules in Web and React Native, have a look at this explanation in the FAQ.

Basic example using Sass

App.scss

.container {
  flex: 1;
  justify-content: center;
  align-items: center;
}

.blue {
  color: blue;
}

.blueText {
  @extend .blue;
  font-size: 18px;
}

App.js

import React from "react";
import { Text, View } from "react-native";
import styles from "./App.scss";

const App = () => (
  <View className={styles.container}>
    <Text className={styles.blueText}>Blue text</Text>
  </View>
);
export default App;

CSS media queries and CSS viewport units

If you need CSS media queries or CSS viewport units, please have a look at the responsive CSS features setup guide.

.wrapper {
  height: 10vh;
  width: 10vw;
}

@media (min-width: 800px) {
  .wrapper {
    height: 20vh;
    width: 20vw;
  }
}

CSS variables

CSS variables are not supported by default, but you can add support for them by using PostCSS and postcss-css-variables plugin.

Please have a look at the CSS variables setup guide.

:root {
  --text-color: blue;
}

.blue {
  color: var(--text-color);
}

Exporting variables from CSS to Javascript

You might also need to share you variables from a CSS/Sass/Less/Stylus file to Javascript. To do that you can use the :export keyword:

colors.scss

$grey: #ccc;

:export {
  grey: $grey;
}

App.js

import React from "react";
import { Text, View } from "react-native";
import colors from "./colors.scss";
import styles from "./App.scss";

const App = () => (
  <View className={styles.container}>
    <Text className={styles.blueText} style={{ color: colors.grey }}>
      Grey text
    </Text>
  </View>
);
export default App;

Example Apps

Have a look at the example apps to see how you can use CSS modules for both React Native and Web using the same code.

Documentation

📚 Setup

📚 Other documentation

Development

To see which new features are being planned and what is in progress, please have a look at the development board.

If you want to suggest a new feature or report a bug, please open a new issue.


Special thanks

The idea for React Native CSS modules comes from these projects that have made a lot of work for supporting CSS and CSS modules in React Native: css-to-react-native and react-native-sass-classname. A big thanks to them!


License

MIT

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