Container

Constrain content width with native breakpoints and optional gutters.

This guide covers Material UI Core with the default Emotion engine; extensions and additional demos are explicitly classified.

Use case and business boundary

Default Emotion Container and PigmentContainer are different engine integrations; do not silently swap them.

Native composition and scope

Container

Preserve native Material UI composition and types; do not substitute JGuang UI/Base UI/Radix APIs. Example entries are not extra components.

Excluded integrations: PigmentContainer (@mui/material-pigment-css). Not claimed verified in the default Emotion environment.

Native installation and initialization

npm install @mui/material@9.4.0 @emotion/react@11.14.0 @emotion/styled@11.14.1

Use native npm and Emotion, not an invented JGuang UI Registry URL. Place examples inside native ThemeProvider; choose CssBaseline or ScopedCssBaseline for the project. Inspect React, existing providers, lockfile and SSR first. Never overwrite files or conceal peer conflicts. This batch verified React 19.2.8; React 18 and below require matching react-is. See the included bilingual setup guide.

Practical native parameters

These selected parameters are not a flattened universal API. Preserve the native declaring owner, slot structure, nullable values and generics.

Runnable native examples

Machine keys select example entries, not universal variant props. Native demo JSX/data stay unchanged; JGuang-authored acceptance fixtures are explicitly labelled.

• Fluid · SimpleContainer · upstream native demo
• Fixed · FixedContainer · upstream native demo

Actual usage example

Unmodified pinned native demo; copy its required local helper files together.

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

export default function SimpleContainer() {
  return (
    <React.Fragment>
      <CssBaseline />
      <Container maxWidth="sm">
        <Box sx={{ bgcolor: '#cfe8fc', height: '100vh' }} />
      </Container>
    </React.Fragment>
  );
}

Example dependency boundaries

react, @mui/material/CssBaseline, @mui/material/Box, @mui/material/Container

Direct Icons/System/Utils example imports require their matching 9.4.0 packages. Relative data/helpers are part of the example closure, not extra components. Remote images and simulated operations do not supply a backend.

Pinned upstream API metadata reference

These tables retain the upstream metadata, not a newly inferred generic type system. Conditional generics, inherited props and callback details are defined by the source declarations below. Theme defaults may override metadata defaults.

Container

import Container from '@mui/material/Container';
import { Container } from '@mui/material';

Native source declarations

Declarations/imports are extracted from pinned source without flattening unions or external inheritance. Original English comments/types are source reference, not a claim of translated upstream prose. Shared types stay in their native packages.

vendor/src/Container/Container.d.ts

import * as React from 'react';

import { SxProps, Breakpoint } from '@mui/system';

import { Theme } from '../styles';

import { OverridableComponent, OverrideProps } from '../OverridableComponent';

import { ContainerClasses } from './containerClasses';

export interface ContainerOwnProps {
  children?: React.ReactNode;
  /**
   * Override or extend the styles applied to the component.
   */
  classes?: Partial<ContainerClasses> | undefined;
  /**
   * If `true`, the left and right padding is removed.
   * @default false
   */
  disableGutters?: boolean | undefined;
  /**
   * Set the max-width to match the min-width of the current breakpoint.
   * This is useful if you'd prefer to design for a fixed set of sizes
   * instead of trying to accommodate a fully fluid viewport.
   * It's fluid by default.
   * @default false
   */
  fixed?: boolean | undefined;
  /**
   * Determine the max-width of the container.
   * The container width grows with the size of the screen.
   * Set to `false` to disable `maxWidth`.
   * @default 'lg'
   */
  maxWidth?: Breakpoint | false | undefined;
  /**
   * The system prop that allows defining system overrides as well as additional CSS styles.
   */
  sx?: SxProps<Theme> | undefined;
}

export interface ContainerTypeMap<
  AdditionalProps = {},
  RootComponent extends React.ElementType = 'div',
> {
  props: AdditionalProps & ContainerOwnProps;
  defaultComponent: RootComponent;
}

declare const Container: OverridableComponent<ContainerTypeMap>;

export type ContainerProps<
  RootComponent extends React.ElementType = ContainerTypeMap['defaultComponent'],
  AdditionalProps = {},
> = OverrideProps<ContainerTypeMap<AdditionalProps, RootComponent>, RootComponent> & {
  component?: React.ElementType | undefined;
};

Post-install acceptance

Run strict types, production build and real interactions. Check keyboard labels/focus, disabled/error/read-only semantics where natively supported, both themes, narrow screens and reduced motion. Verify callbacks against the real host data; do not declare installation complete from copying a prompt. Initialization fixtures also require server HTML and warning-free hydration.

Source and license

https://github.com/mui/material-ui/tree/809a7717b4c050ba3f69b75300689f07c050a16e

MIT · @mui/material@9.4.0. Vendor originals and license are preserved. Full original upstream prose remains in vendor/docs and is not represented as fully translated.