Backdrop API

API reference docs for the React Backdrop component. Learn about the props, CSS, and other APIs of this exported module.

Demos

For examples and details on the usage of this React component, visit the component demo pages:

Backdrop

Import

import Backdrop from '@mui/material/Backdrop';
// or
import { Backdrop } from '@mui/material';

Learn about the difference by reading this guide on minimizing bundle size.

Props

Props of the Fade component are also available.

Name	Type	Default	Description
open*	bool	-	If `true`, the component is shown.
children	node	-	The content of the component.
classes	object	-	Override or extend the styles applied to the component. See CSS classes API below for more details.
component	elementType	-	The component used for the root node. Either a string to use a HTML element or a component.
components	{ Root?: elementType }	{}	The components used for each slot inside. This prop is an alias for the `slots` prop. It's recommended to use the `slots` prop instead.
componentsProps	{ root?: object }	{}	The extra props for the slot components. You can override the existing props or add new ones. This prop is an alias for the `slotProps` prop. It's recommended to use the `slotProps` prop instead, as `componentsProps` will be deprecated in the future.
invisible	bool	false	If `true`, the backdrop is invisible. It can be used when rendering a popover or a custom select component.
slotProps	{ root?: func \| object, transition?: func \| object }	{}	The props used for each slot inside.
slots	{ root?: elementType, transition?: elementType }	{}	The components used for each slot inside.
sx	Array<func \| object \| bool> \| func \| object	-	The system prop that allows defining system overrides as well as additional CSS styles. See the `sx` page for more details.
TransitionComponent	elementType	Fade	The component used for the transition. Follow this guide to learn more about the requirements for this component. Deprecated - Use `slots.transition` instead. This prop will be removed in v7. How to migrate.
transitionDuration	number \| { appear?: number, enter?: number, exit?: number }	-	The duration for the transition, in milliseconds. You may specify a single timeout for all transitions, or individually with an object.

The ref is forwarded to the root element.

Inheritance

While not explicitly documented above, the props of the Fade component are also available in Backdrop. You can take advantage of this to target nested components.

Theme default props

You can use MuiBackdrop to change the default props of this component with the theme.

Slots

Slot name	Class name	Default component	Description
root	.MuiBackdrop-root	`'div'`	The component that renders the root.
transition		`Fade`	The component that renders the transition. Follow this guide to learn more about the requirements for this component.

CSS classes

These class names are useful for styling with CSS. They are applied to the component's slots when specific states are triggered.

Class name	Rule name	Description
.MuiBackdrop-invisible	invisible	Styles applied to the root element if `invisible={true}`.

You can override the style of the component using one of these customization options:

With a global class name.
With a rule name as part of the component's styleOverrides property in a custom theme.