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Collapse API

The API documentation of the Collapse React component. Learn more about the props and the CSS customization points.


import Collapse from '@material-ui/core/Collapse';
// or
import { Collapse } from '@material-ui/core';

You can learn more about the difference by reading this guide.

The Collapse transition is used by the Vertical Stepper StepContent component. It uses react-transition-group internally.

Component name

The MuiCollapse name can be used for providing default props or style overrides at the theme level.


Name Type Default Description
children node The content node to be collapsed.
classes object Override or extend the styles applied to the component. See CSS API below for more details.
collapsedHeight number
| string
Deprecated. The prop was renamed to support the vertical orientation, use collapsedSize instead

The height of the container when collapsed.
collapsedSize number
| string
'0px' The height of the container when collapsed.
component elementType 'div' The component used for the root node. Either a string to use a HTML element or a component.
disableStrictModeCompat bool false Enable this prop if you encounter 'Function components cannot be given refs', use unstable_createStrictModeTheme, and can't forward the ref in the passed Component.
in bool If true, the component will transition in.
timeout 'auto'
| number
| { appear?: number, enter?: number, exit?: number }
duration.standard The duration for the transition, in milliseconds. You may specify a single timeout for all transitions, or individually with an object.
Set to 'auto' to automatically calculate transition time based on height.

The ref is forwarded to the root element.

Any other props supplied will be provided to the root element (Transition).


Rule name Global class Description
root .MuiCollapse-root Styles applied to the root element.
entered .MuiCollapse-entered Styles applied to the root element when the transition has entered.
hidden .MuiCollapse-hidden Styles applied to the root element when the transition has exited and collapsedSize != 0px.
wrapper .MuiCollapse-wrapper Styles applied to the outer wrapper element.
wrapperInner .MuiCollapse-wrapperInner Styles applied to the inner wrapper element.

You can override the style of the component thanks to one of these customization points:

If that's not sufficient, you can check the implementation of the component for more detail.


The props of the Transition component, from react-transition-group, are also available. You can take advantage of this behavior to target nested components.