The prefers-reduced-motion CSS media feature is used to detect if a user has enabled a setting on their device to minimize the amount of non-essential motion. The setting is used to convey to the browser on the device that the user prefers an interface that removes, reduces, or replaces motion-based animations.| MDN Web Docs
WebKit now supports the prefers-reduced-motion media feature, part of CSS Media Queries Level 5, User Preferences.| WebKit