Developers now have a CSS-native approach for parallax effects using Scroll-driven animation timelines. This method replaces traditional JavaScript scroll listeners with declarative CSS code that runs off the main thread, improving performance and simplifying implementation to a single utility class.

The key lies in view-timeline-name and view-timeline-axis properties that create progress timelines based on element position in the viewport. Child elements use animation-timeline to connect their movement to scroll position rather than time, creating depth effects through CSS transforms.

Scaling elements prevents empty spaces during movement, while respecting prefers-reduced-motion ensures accessibility. The implementation requires just one variable to tune the effect strength, making it both powerful and easy to implement.