Aww yeah, Material-UI v4 is coming!
Basics

Basics

You can leverage our styling solution, even if you are not using our components.

⚠️ @material-ui/styles is unstable (alpha version). Hopefully, we will make it the default style implementation for the core components in Material-UI v4. Follow this path to read the documentation of the default style implementation.

Material-UI aims to provide strong foundations for building dynamic UIs. For the sake of simplicity, we expose our styling solution to users. You can use it, but you don't have to. This styling solution is interoperable with all the other major solutions.

Material-UI's styling solution

In previous versions, Material-UI has used LESS, then a custom inline-style solution to write the style of the components, but these approaches have proven to be limited. Most recently, we have moved toward a CSS-in-JS solution. It unlocks many great features (theme nesting, dynamic styles, self-support, etc.). We think that this is the future:

Material-UI's styling solution is inspired by many other CSS-in-JS libraries like styled-components and emotion.

  • 💅 You can expect the same advantages as styled-components.
  • 🚀 Is blazing fast. x2.6 faster than emotion on the server for rendering static style sheets.
  • 🧩 Is extensible via a plugins API.
  • ⚡️ It uses JSS at its core. It's a high performance JavaScript to CSS compiler which works at runtime and server-side.
  • 📦 Less than 15 KB gzipped.

Installation

To install and save in your package.json dependencies, run:

// with npm
npm install @material-ui/styles

// with yarn
yarn add @material-ui/styles

Please note that it depends on react@next and react-dom@next.

Migration for @material-ui/core users

To switch from the default style implementation to this newest version, you need to execute the following code before importing any Material-UI's components:

import { install } from '@material-ui/styles';

install();

It is recommended to place the above code in a separate file (e.g. bootstrap.js) and to import it in your application's entry point (e.g. index.js).

This bootstrap file should be imported before any of your own components that use Material-UI components.

eg.

import "./bootstrap"; 
import React from 'react';
import ReactDOM from 'react-dom';
import App from './components/App';
import { ThemeProvider } from '@material-ui/styles';

This ensures that the installation is executed before anything else, because ECMAScript imports are hoisted to the top of the module. If the installation step is not performed correctly the resulting build could have conflicting class names.

We will make @material-ui/styles the default style implementation for the core components in Material-UI v4. This installation step is temporary. Behind the scenes, the install() function switches the styling engine the core components use.

Also, the @material-ui/core/MuiThemeProvider component can be replaced with @material-ui/styles/ThemeProvider. We will remove this component in v4.

Getting started

We provide 3 different APIs. They all share the same underlying logic.

Hook API

import React from 'react';
import { makeStyles } from '@material-ui/styles';
import Button from '@material-ui/core/Button';

const useStyles = makeStyles({
  root: {
    background: 'linear-gradient(45deg, #FE6B8B 30%, #FF8E53 90%)',
    border: 0,
    borderRadius: 3,
    boxShadow: '0 3px 5px 2px rgba(255, 105, 135, .3)',
    color: 'white',
    height: 48,
    padding: '0 30px',
  },
});

export default function Hook() {
  const classes = useStyles();
  return <Button className={classes.root}>Hook</Button>;
}

Styled components API

import React from 'react';
import { styled } from '@material-ui/styles';
import Button from '@material-ui/core/Button';

const MyButton = styled(Button)({
  background: 'linear-gradient(45deg, #FE6B8B 30%, #FF8E53 90%)',
  border: 0,
  borderRadius: 3,
  boxShadow: '0 3px 5px 2px rgba(255, 105, 135, .3)',
  color: 'white',
  height: 48,
  padding: '0 30px',
});

export default function StyledComponents() {
  return <MyButton>Styled Components</MyButton>;
}

Higher-order component API

import React from 'react';
import PropTypes from 'prop-types';
import { withStyles } from '@material-ui/styles';
import Button from '@material-ui/core/Button';

const styles = {
  root: {
    background: 'linear-gradient(45deg, #FE6B8B 30%, #FF8E53 90%)',
    border: 0,
    borderRadius: 3,
    boxShadow: '0 3px 5px 2px rgba(255, 105, 135, .3)',
    color: 'white',
    height: 48,
    padding: '0 30px',
  },
};

function HigherOrderComponent(props) {
  const { classes } = props;
  return <Button className={classes.root}>Higher-order component</Button>;
}

HigherOrderComponent.propTypes = {
  classes: PropTypes.object.isRequired,
};

export default withStyles(styles)(HigherOrderComponent);

Adapting based on props

You can pass a function ("interpolations") to a style property to adapt it based on its props. This button component has a color property that changes its color:

Adapting hook API



Adapting styled components API



Adapting higher-order component API