# Cart Stepper

> An Add to bag pill that springs open into a quantity stepper with a rolling count and a dark checkout total, then turns into a green Order placed confirmation with confetti. Controlled or uncontrolled quantity, price formatting, keyboard support, reduced motion. More like this, plus a designer your coding agent can use, at studios.lou15.com/?ref=21st

- Author: [Louis Studios](https://21st.dev/@louisstudios)
- License: mit
- Tags: Button, Number
- Live preview: https://21st.dev/@louisstudios/components/cart-stepper

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/louisstudios/cart-stepper?api_key=$API_KEY_21ST"
```

Requires a 21st API key (generate one at https://21st.dev/mcp) passed as `API_KEY_21ST`. Free accounts get a limited number of installs per day; unlimited on a paid plan — see https://21st.dev/pricing.

Full component directory: https://21st.dev/llms.txt · More like this: https://21st.dev/community/components/s/button.md