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filename: /packages/material-ui/src/BottomNavigation/BottomNavigation.js
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# BottomNavigation



## Props

| Name | Type | Default | Description |
|:-----|:-----|:--------|:------------|
| <span class="prop-name required">children *</span> | <span class="prop-type">node |  | The content of the component. |
| <span class="prop-name">classes</span> | <span class="prop-type">object |  | Override or extend the styles applied to the component. See [CSS API](#css-api) below for more details. |
| <span class="prop-name">onChange</span> | <span class="prop-type">func |  | Callback fired when the value changes.<br><br>**Signature:**<br>`function(event: object, value: any) => void`<br>*event:* The event source of the callback<br>*value:* We default to the index of the child |
| <span class="prop-name">showLabels</span> | <span class="prop-type">bool | <span class="prop-default">false</span> | If `true`, all `BottomNavigationAction`s will show their labels. By default, only the selected `BottomNavigationAction` will show its label. |
| <span class="prop-name">value</span> | <span class="prop-type">any |  | The value of the currently selected `BottomNavigationAction`. |

Any other properties supplied will be spread to the root element (native element).

## CSS API

You can override all the class names injected by Material-UI thanks to the `classes` property.
This property accepts the following keys:
- `root`

Have a look at [overriding with classes](/customization/overrides#overriding-with-classes) section
and the [implementation of the component](https://github.com/mui-org/material-ui/tree/master/packages/material-ui/src/BottomNavigation/BottomNavigation.js)
for more detail.

If using the `overrides` key of the theme as documented
[here](/customization/themes#customizing-all-instances-of-a-component-type),
you need to use the following style sheet name: `MuiBottomNavigation`.

## Demos

- [Bottom Navigation](/demos/bottom-navigation)