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# @vaadin/accordion

A web component for displaying a vertically stacked set of expandable panels.

[Documentation + Live Demo ↗](https://vaadin.com/docs/latest/components/accordion)

[![npm version](https://badgen.net/npm/v/@vaadin/accordion)](https://www.npmjs.com/package/@vaadin/accordion)

```html

  
    Accordion Panel 1
    Accordion is a set of expandable sections.
  
  
    Accordion Panel 2
    Only one accordion panel can be opened.
  

```

[](https://vaadin.com/docs/latest/components/accordion)

## Installation

Install the component:

```sh
npm i @vaadin/accordion
```

Once installed, import the component in your application:

```js
import '@vaadin/accordion';
```

## Themes

Vaadin components come with two built-in [themes](https://vaadin.com/docs/latest/styling), Lumo and Material.
The [main entrypoint](https://github.com/vaadin/web-components/blob/main/packages/accordion/vaadin-accordion.js) of the package uses the Lumo theme.

To use the Material theme, import the component from the `theme/material` folder:

```js
import '@vaadin/accordion/theme/material/vaadin-accordion.js';
```

You can also import the Lumo version of the component explicitly:

```js
import '@vaadin/accordion/theme/lumo/vaadin-accordion.js';
```

Finally, you can import the un-themed component from the `src` folder to get a minimal starting point:

```js
import '@vaadin/accordion/src/vaadin-accordion.js';
```

## Contributing

Read the [contributing guide](https://vaadin.com/docs/latest/contributing) to learn about our development process, how to propose bugfixes and improvements, and how to test your changes to Vaadin components.

## License

Apache License 2.0

Vaadin collects usage statistics at development time to improve this product.
For details and to opt-out, see https://github.com/vaadin/vaadin-usage-statistics.