Box

The Box component is a generic, theme-aware container with access to CSS utilities from MUI System.

Introduction

The Box component is a generic container for grouping other components. It's a fundamental building block when working with Material UI—you can think of it as a <div> with extra built-in features, like access to your app's theme and the sx prop.

Usage

The Box component differs from other containers available in Material UI in that its usage is intended to be multipurpose and open-ended, just like a <div>. Components like Container, Stack and Paper, by contrast, feature usage-specific props that make them ideal for certain use cases: Container for main layout orientation, Stack for one-dimensional layouts, and Paper for elevated surfaces.

Basics

import Box from '@mui/material/Box';

The Box component renders as a <div> by default, but you can swap in any other valid HTML tag or React component using the component prop. The demo below replaces the <div> with a <section> element:

This Box renders as an HTML section element.

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

export default function BoxBasic() {
  return (
    <Box component="section" sx={{ p: 2, border: '1px dashed grey' }}>
      This Box renders as an HTML section element.
    </Box>
  );
}

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

export default function BoxBasic() {
  return (
    <Box component="section" sx={{ p: 2, border: '1px dashed grey' }}>
      This Box renders as an HTML section element.
    </Box>
  );
}

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Customization

With the sx prop

Use the sx prop to quickly customize any Box instance using a superset of CSS that has access to all the style functions and theme-aware properties exposed in the MUI System package. The demo below shows how to apply colors from the theme using this prop:

import * as React from 'react';
import Box from '@mui/material/Box';
import { ThemeProvider } from '@mui/material/styles';

export default function BoxSx() {
  return (
    <ThemeProvider
      theme={{
        palette: {
          primary: {
            main: '#007FFF',
            dark: '#0066CC',
          },
        },
      }}
    >
      <Box
        sx={{
          width: 100,
          height: 100,
          borderRadius: 1,
          bgcolor: 'primary.main',
          '&:hover': {
            bgcolor: 'primary.dark',
          },
        }}
      />
    </ThemeProvider>
  );
}

import * as React from 'react';
import Box from '@mui/material/Box';
import { ThemeProvider } from '@mui/material/styles';

export default function BoxSx() {
  return (
    <ThemeProvider
      theme={{
        palette: {
          primary: {
            main: '#007FFF',
            dark: '#0066CC',
          },
        },
      }}
    >
      <Box
        sx={{
          width: 100,
          height: 100,
          borderRadius: 1,
          bgcolor: 'primary.main',
          '&:hover': {
            bgcolor: 'primary.dark',
          },
        }}
      />
    </ThemeProvider>
  );
}

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With MUI System props

Anatomy

The Box component is composed of a single root <div> element:

<div className="MuiBox-root">
  <!-- contents of the Box -->
</div>

API

See the documentation below for a complete reference to all of the props and classes available to the components mentioned here.

<Box />