# Frosted Window Background

> Frosted window background: a winter pane at blue hour that frosts over as the page loads, grown by a real phase-field crystal simulation on the GPU, with six-fold dendrites creeping in from the cold frame over blurred street lights. Draw a finger across the glass to wipe a clear trail, and the frost grows back along its old paths. React only, WebGL2, no assets.

- Author: [Kedhareswer Naidu](https://21st.dev/@kedhareswer)
- License: mit
- Tags: Animated, Background, Interactive, Shader, WebGL
- Live preview: https://21st.dev/@kedhareswer/components/hoarfrost-pane

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/kedhareswer/hoarfrost-pane?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/animated.md