# Momentum (`.sds-btn-momentum`)

Momentum — button animation. Buttons animation in SDS Motion Forge v5.0.0. It plays once as soon as the class is applied.

- Page: https://sds-motion-forge.netlify.app/animations/btn-momentum/
- Category: Buttons (https://sds-motion-forge.netlify.app/categories/buttons/)
- Animated properties: filter, 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-momentum">Button</button>
```

## How it works

Plays once, as soon as the class is applied. It animates filters (blur/brightness), opacity and movement and scale (transform) — compositor-only, so it never causes page reflow. `--sds-easing` controls the feel — override either on the element or :root (the sds-fast/sds-slow modifier classes do exactly that).

## Related

- [Liquid Fill](https://sds-motion-forge.netlify.app/animations/btn-liquid/)
- [Magnetic Pulse](https://sds-motion-forge.netlify.app/animations/btn-magnetic/)
- [Magnetic Trail](https://sds-motion-forge.netlify.app/animations/btn-magnetic-trail/)
- [Morph Pill](https://sds-motion-forge.netlify.app/animations/btn-morph/)
- [Neon Sign](https://sds-motion-forge.netlify.app/animations/btn-neon/)
- [Neon Trace](https://sds-motion-forge.netlify.app/animations/btn-neon-trace/)