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Learn the basics of working with Material UI components.


The following code snippet demonstrates a simple app that uses the Material UI Button component:

import * as React from 'react';
import Button from '@mui/material/Button';

export default function MyApp() {
  return (
      <Button variant="contained">Hello World</Button>

You can play around with this code in the interactive Code Sandbox demo below. Try changing the variant on the Button to outlined to see how the style changes:


Since Material UI components are built to function in isolation, they don't require any kind of globally scoped styles. For a better user experience and developer experience, we recommend adding the following globals to your app.

Responsive meta tag

Material UI is a mobile-first component library—we write code for mobile devices first, and then scale up the components as necessary using CSS media queries.

To ensure proper rendering and touch zooming for all devices, add the responsive viewport meta tag to your <head> element:

<meta name="viewport" content="initial-scale=1, width=device-width" />


Material UI provides an optional CssBaseline component. It fixes some inconsistencies across browsers and devices while providing resets that are better tailored to fit Material UI than alternative global style sheets like normalize.css.

Default font

Material UI uses the Roboto font by default. See Installation—Roboto font for complete details.