# Blink In (`.sds-scroll-blink-in`)

Opacity steps up through four discrete levels like a screen powering on. Scroll animation in SDS Motion Forge v5.0.0. It plays once when scrolled into view.

- Page: https://sds-motion-forge.netlify.app/animations/scroll-blink-in/
- Category: Scroll (https://sds-motion-forge.netlify.app/categories/scroll/)
- Animated properties: opacity
- Compositor-only: yes
- Needs child elements: no
- Needs per-character spans: no
- JavaScript: sds-scroll (optional)

## Use it

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

<div class="sds-scroll-blink-in" data-sds>Scrolls into view</div>
```

## How it works

Plays when the element enters the viewport (gated by data-sds + the scroll engine, or fire it yourself by adding the class). It animates opacity — compositor-only, so it never causes page reflow. Timing is fixed for this effect, but you can still override animation-duration/timing-function on the element.

## Related

- [Barrel](https://sds-motion-forge.netlify.app/animations/scroll-barrel/)
- [Blur Ascend](https://sds-motion-forge.netlify.app/animations/scroll-blur/)
- [Bounce](https://sds-motion-forge.netlify.app/animations/scroll-bounce/)
- [Cascade](https://sds-motion-forge.netlify.app/animations/scroll-cascade/)