# Beacon (`.sds-btn-beacon`)

One ring ping every couple of seconds with true rest between — rhythm, not noise. Buttons animation in SDS Motion Forge v5.0.0. It loops continuously as soon as the class is applied.

- Page: https://sds-motion-forge.netlify.app/animations/btn-beacon/
- Category: Buttons (https://sds-motion-forge.netlify.app/categories/buttons/)
- Animated properties: opacity, transform
- Compositor-only: yes
- Needs child elements: no
- Needs per-character spans: no
- JavaScript: none required

## Use it

```html
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@salkomdesignstudio/sds-motion-forge/dist/categories/buttons.min.css" />

<button class="sds-btn-beacon">Button</button>
```

## How it works

Plays as soon as the class is applied, looping continuously. It animates opacity and movement and scale (transform) — compositor-only, so it never causes page reflow. `--sds-duration-slower` controls the speed and `--sds-ease-decelerate` controls the feel — override either on the element or :root (the sds-fast/sds-slow modifier classes do exactly that).

## Related

- [Amp](https://sds-motion-forge.netlify.app/animations/btn-amp/)
- [Aurora](https://sds-motion-forge.netlify.app/animations/btn-aurora/)
- [Blinds](https://sds-motion-forge.netlify.app/animations/btn-blinds/)
- [Border Flow](https://sds-motion-forge.netlify.app/animations/btn-border-flow/)
- [Bounce](https://sds-motion-forge.netlify.app/animations/btn-bounce/)