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components
CssBaseline

CSS Baseline

Material-UI provides a CssBaseline component to kickstart an elegant, consistent, and simple baseline to build upon.

You might be familiar with normalize.css, a collection of HTML element and attribute style-normalizations.

import React from 'react';
import CssBaseline from '@material-ui/core/CssBaseline';

function MyApp() {
  return (
    <React.Fragment>
      <CssBaseline />
      {/* The rest of your application */}
    </React.Fragment>
  );
}

export default MyApp;

Approach

Page

The <html> and <body> elements are updated to provide better page-wide defaults. More specifically:

  • The margin in all browsers is removed.
  • The default Material Design background color is applied. It's using theme.palette.background.default for standard devices and a white background for print devices.

Layout

  • box-sizing is set globally on the <html> element to border-box. Every element—including *::before and *::after are declared to inherit this property, which ensures that the declared width of the element is never exceeded due to padding or border.

Typography

  • Font antialiasing is enabled for better display of the Roboto font.
  • No base font-size is declared on the <html>, but 16px is assumed (the browser default). You can learn more about the implications of changing the <html> default font size in the theme documentation page.