# Underline Animation

> An animated CSS hover underline for links with multiple motion styles (slide, center, fill, wavy, gradient) that supports active/current-page state and respects reduced motion.

- Author: [Wensity Labs](https://21st.dev/@wensity)
- Library: wensity
- License: no-license
- Tags: Underline, Link, Hover Effect, Text Animation
- Live preview: https://21st.dev/@wensity/components/underline-animation

## Install

```bash
npx shadcn@latest add "https://21st.dev/r/wensity/underline-animation?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/underline.md