# Preview card

Host: Base UI. Path: transitions. Preset: `scale-fade`. Built against [@base-ui/react 1.5.0](https://www.npmjs.com/package/@base-ui/react/v/1.5.0).

The Base UI equivalent of a hover card.

The page this file mirrors mounts the component twice, once with the attribute and once without, so the only difference between the two is the library.

Upstream documentation: [Base UI documentation](https://base-ui.com/react/components/preview-card)

Only in Base UI. No other host here implements this component.

## Where the attribute goes

The parts this demo composes, and the value each one carries. Everything inside an animated part is that part's content, so the tree stops there.

```text
PreviewCard.Root
  PreviewCard.Trigger
  PreviewCard.Portal
    PreviewCard.Positioner
      PreviewCard.Popup  data-motion="scale-fade"
```

## How the match works

| Step | Value |
| --- | --- |
| host writes | `data-ending-style, data-side` |
| easeful matches | `[data-motion~="scale-fade"][data-ending-style]` |
| what runs | `transition: opacity, scale 150ms` |
| you write | `<PreviewCard.Popup data-motion="scale-fade" />` |

## Every value that works here

Every value the manifest allows on this host, single presets and the pairs that compose. The first is what this component ships with. Both stages are the same component, so anything that changes between them is the attribute.

| Value | Link |
| --- | --- |
| `scale-fade` | the default |
| `fade` | [fade](/base-ui/preview-card#motion=fade) |
| `slide-up` | [slide-up](/base-ui/preview-card#motion=slide-up) |
| `fade slide-up` | [fade slide-up](/base-ui/preview-card#motion=fade%20slide-up) |
| `scale-fade slide-up` | [scale-fade slide-up](/base-ui/preview-card#motion=scale-fade%20slide-up) |

## Source

`apps/docs/components/demos/base-ui/preview-card.tsx`

```tsx
"use client"

import { PreviewCard } from "@base-ui/react/preview-card"
import type { DemoProps } from "@/components/demos/props"

export function BaseUiPreviewCard({ motion }: DemoProps) {
  return (
    <PreviewCard.Root>
      <PreviewCard.Trigger className="btn">Hover me</PreviewCard.Trigger>
      <PreviewCard.Portal>
        <PreviewCard.Positioner sideOffset={10} collisionPadding={16}>
          <PreviewCard.Popup className="panel" data-motion={motion}>
            <p className="panel__title">Preview card</p>
            <p className="panel__body">The Base UI equivalent of a hover card.</p>
          </PreviewCard.Popup>
        </PreviewCard.Positioner>
      </PreviewCard.Portal>
    </PreviewCard.Root>
  )
}
```