# Halo Breathe (`.sds-btn-halo-breathe`)

A soft halo grows and recedes with brightness in sync — calm, steady presence. 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-halo-breathe/
- Category: Buttons (https://sds-motion-forge.netlify.app/categories/buttons/)
- Animated properties: filter
- 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-halo-breathe">Button</button>
```

## How it works

Plays as soon as the class is applied, looping continuously. It animates filters (blur/brightness) — compositor-only, so it never causes page reflow. `--sds-duration-dramatic` controls the speed — override either on the element or :root (the sds-fast/sds-slow modifier classes do exactly that).

## Related

- [Halo Flicker On](https://sds-motion-forge.netlify.app/animations/btn-halo-flicker-on/)
- [Halo Split](https://sds-motion-forge.netlify.app/animations/btn-halo-split/)
- [Gravity](https://sds-motion-forge.netlify.app/animations/btn-gravity/)
- [Gravity Pull](https://sds-motion-forge.netlify.app/animations/btn-gravity-pull/)
- [Guillotine](https://sds-motion-forge.netlify.app/animations/btn-guillotine/)
- [Heartbeat](https://sds-motion-forge.netlify.app/animations/btn-heartbeat/)