Reference: josh-comeau

Source: https://www.joshwcomeau.com/

Observation

The index links to explanations of scroll-driven CSS animation and animation performance.

Application

Borrow: teach a mechanism with direct manipulation and text together; avoid decorative motion without explanatory role.

Evidence limits

Index inspected; no article runtime or numerical animation parameters measured.

No third-party code, images or footage was incorporated. A 1440×900 scroll recording and step screenshots were not collected for this reference; numerical timeline parameters are intentionally not inferred.