---
title: "Sticky Mock Swap"
description: "A pinned product mock cross-fades through accent-tinted feature states while matching captions rise, hold, and exit beside it."
---
import { InstallCommand } from "/snippets/install-command.jsx";
import { VariablesExplorer } from "/snippets/variables-explorer.jsx";
```html sticky-mock-swap.html
Sticky Mock Swap
```
## Install
That writes one file: `compositions/components/sticky-mock-swap.html`.
## Paste it into your composition
Open `compositions/components/sticky-mock-swap.html` and copy what is inside into your own composition.
A component has no size or duration of its own. It takes both from the composition
you paste it into.
## Variables
Every one of these has a default, so the piece works untouched. Set the ones you
want to change on the element:
| Variable | Default | Accepts | What it does |
| --- | --- | --- | --- |
| `captions` | `Instant previews,Zero config,Ship on Friday` | string | Comma-separated feature captions shown beside the pinned mock. |
| `accent` | `violet` | `green`, `blue`, `violet` | Accent tint used across the mock states. |
Set them with `data-variable-values` on the element that mounts it. These are the
defaults, so this behaves exactly like the preview above until you change one:
```html wrap
```
## Source
```html
Sticky Mock Swap
```
{/* hf:generated-footer */}
Tagged `motion-primitive` `product-demo` `sticky` `mock` `crossfade` `feature-tour`.
## Related topics
- [Browse the complete Catalog](/catalog)
- [Add assets and Catalog items in Studio](/studio/assets-and-blocks)
- [Build a richer composition](/go-further)