> For the complete documentation index, see [llms.txt](https://docs.heisenware.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.heisenware.com/app-builder/build-frontend/widgets/display-widgets/card.md).

# Card

The card widget is a decorative container that structures and groups other widgets on the canvas of your App. It provides a background surface driven by styling data such as colors, borders, and shadows.

## Data binding

### Function output or modifier to widget

| **Property**      | **Description**                                                                                                     | **Type**         |
| ----------------- | ------------------------------------------------------------------------------------------------------------------- | ---------------- |
| `width`           | Sets the horizontal width of the card.                                                                              | string or number |
| `height`          | Sets the vertical height of the card.                                                                               | string or number |
| `variant`         | Switches the surface style between `elevation` (shadow-based) and `outlined` (border-based).                        | string           |
| `backgroundColor` | Sets the background color of the card.                                                                              | string           |
| `opacity`         | Sets the transparency of the widget from `0.0` (fully transparent) to `1.0` (opaque).                               | number           |
| `borderRadius`    | Sets the corner rounding radius. Use `theme` to match the global app styles.                                        | string           |
| `elevation`       | Sets the shadow depth (`flat`, `theme`, `low`, `medium`, `high`) when `variant` is set to `elevation`.              | string           |
| `border`          | Sets the border properties when `variant` is set to `outlined`. Takes an object with `width`, `style`, and `color`. | object           |
| `style`           | An array of custom CSS property objects containing `key` and `value` pairs for advanced styling overrides.          | array\<object>   |

## Configuration

Set the widget's defaults in the settings panel.

### Card style

| **Property** | **Label**       | **Description**                                                                                        | **Type** |
| ------------ | --------------- | ------------------------------------------------------------------------------------------------------ | -------- |
| `variant`    | Surface style   | Choose elevation for shadows or outlined for borders.                                                  | string   |
| `elevation`  | Elevation       | Sets the shadow depth from flat to high. This field is visible when surface style is set to elevation. | string   |
| `border`     | Border settings | Sets the border width, color, and style. This field is visible when surface style is set to outlined.  | object   |

### Styling and customization

| **Property**      | **Label**        | **Description**                                 | **Type** |
| ----------------- | ---------------- | ----------------------------------------------- | -------- |
| `backgroundColor` | Background color | Sets the background color of the card.          | string   |
| `opacity`         | Opacity          | Sets the transparency of the card from 0 to 1.  | number   |
| `borderRadius`    | Corner radius    | Sets the corner rounding from square to circle. | string   |

### Custom CSS overrides

| **Property** | **Label** | **Description**                  | **Type** |
| ------------ | --------- | -------------------------------- | -------- |
| `key`        | Property  | The camelCase CSS property name. | string   |
| `value`      | Value     | The matching CSS property value. | string   |


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