# `layout`

Controls the layout of the API docs page, affecting how the panels are displayed. The default value is `three-panel` which uses the default layout with the sidebar, middle panel, and right panel with code samples. Set the value to `stacked` to move the entire right panel into the middle panel. The `stacked` layout is identical to the layout activated by selecting the **Change View** button on the API documentation page.

The layout  is not available in Redoc Community Edition.

The `layout` option is a string that sets the layout of the API documentation page.

## Options

| Option | Type | Enum | Description |
|  --- | --- | --- | --- |
| layout | string | `three-panel` | `stacked`. | Controls the layout of the API docs page. Default value is `three-panel`. |


## Examples

The following example configures the layout for the API documentation page to be set to `stacked`:


```yaml redocly.yaml
openapi:
  layout: 'stacked'
```

![stacked layout](/assets/stacked-layout.4102334317932f533d6ae37ba7b994dfee68c86717d36f5985ebe95bf3cea488.d96f5373.png)


```yaml redocly.yaml
openapi:
  layout: 'three-panel'
```

![three panel layout](/assets/three-panel-layout.c03a6c8c1f879f16a6b05b8a166609e766fbdfd7e82775338bc6cd3cbbb59210.d96f5373.png)

## Resources

- **[OpenAPI configuration](/docs/realm/config/openapi)** - Complete guide to OpenAPI configuration options for customizing API reference documentation
- **[OpenAPI Specification](https://spec.openapis.org/oas/latest.html)** - Official OpenAPI Specification documentation for understanding API description standards
- **[OpenAPI visual reference](https://redocly.com/learn/openapi/openapi-visual-reference)** - Visual guide to OpenAPI specification structure and layout configuration principles
- **[Configuration options](/docs/realm/config)** - Explore other project configuration options for comprehensive documentation customization