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Sigmoid documentation
Scroll motion without the JavaScript tax: native CSS scroll timelines, spring and S-curve easings as CSS linear(), reduced motion by default. About 2 kB.
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Guides
- CSS onlydata-sigmoid attributes, custom properties and the easing variables.
- JavaScript APIreveal, parallax, scrub and progress with native timelines and a small fallback.
- Easing curvesSprings, the logistic S-curve and Bézier curves for JavaScript and CSS.
- ReactReveal, Parallax, ScrollProgress and hooks.
- Reduced motionHow Sigmoid respects prefers-reduced-motion.