Parallax Motion creates illusion of depth by moving foreground elements faster than background elements. Common in scrolling (background moves slower) or mouse movement (layers move at different rates). Adds visual richness and draws attention. Can be subtle or dramatic. Overuse causes motion sickness.
Use parallax for marketing pages, hero sections, portfolio sites, or storytelling experiences where visual wow-factor matters. Keep subtle (20-30% speed difference) for comfort. Common trigger: scroll position or mouse movement. Use transform for performance. Always respect prefers-reduced-motion. Don't use on content-heavy pages or apps where readability is critical.
Motion Animation
Layered animation where elements move at different speeds to create depth. Creates immersive, dimensional scrolling experiences.