accordion

Import

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

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

Props of the Paper component are also available.

Name	Type	Default	Description
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.
defaultExpanded	bool	false	If true, expands the accordion by default.
disabled	bool	false	If true, the component is disabled.
disableGutters	bool	false	If true, it removes the margin between two expanded accordion items and the increase of height.
expanded	bool	-	If true, expands the accordion, otherwise collapse it. Setting this prop enables control over the accordion.
onChange	func	-	Callback fired when the expand/collapse state is changed. Signature: function(event: React.SyntheticEvent, expanded: boolean) => void - event The event source of the callback. Warning: This is a generic event not a change event. - expanded The expanded state of the accordion.
slotProps	{ heading?: func | object, transition?: func | object }	{}	The props used for each slot inside.
slots	{ heading?: elementType, transition?: elementType }	{}	The components used for each slot inside.
square	bool	false	If true, rounded corners are disabled.
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	-	The component used for the transition. Follow this guide to learn more about the requirements for this component.
TransitionProps	object	-	Props applied to the transition element. By default, the element is based on this Transition component.

The ref is forwarded to the root element.

Inheritance

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

Theme default props

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

Slot name	Class name	Default component	Description
heading	.MuiAccordion-heading	'h3'	The component that renders the heading.
transition	-	Collapse	The component that renders the transition. Follow this guide to learn more about the requirements for this component.

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
.Mui-disabled	-	State class applied to the root element if disabled={true}.
.Mui-expanded	-	State class applied to the root element if expanded={true}.
.MuiAccordion-gutters	gutters	Styles applied to the root element unless disableGutters={true}.
.MuiAccordion-region	region	Styles applied to the region element, the container of the children.
.MuiAccordion-root	root	Styles applied to the root element.
.MuiAccordion-rounded	rounded	Styles applied to the root element unless square={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.

Source code

If you did not find the information in this page, consider having a look at the implementation of the component for more detail.