Frontend & browser·Accessibility and semantics
you wrapped the parallax animation in a media query and it stops for anyone who asked their system to calm down.
prefers-reduced-motion
Also calledreduced motion
A media query exposing an operating-system preference for less motion, set by people for whom animation causes nausea or migraine. Honouring it means removing large movement, parallax and auto-playing transitions, not removing every transition — a short fade is usually fine and better than an abrupt change. Treating it as an accessibility requirement rather than a nicety is the correct reading.