Parallax Scrolling
Parallax scrolling makes layers move at different speeds while a page scrolls. The speed difference creates a sense of depth.
animation-timeline: scroll()A real example
A background landscape moves slower than the front text. This makes it seem farther away.
Main parts
- 01Trigger
- 02Property change
- 03Timing model
- 04Reduced-motion result
Use it when
Use a small parallax effect when depth helps explain the story or space.
Do not use it when
Never use strong parallax on reading pages or without a reduced-motion option.
Name used in code
animation-timeline: scroll() Before you ship
Check content order, shared design values, component consistency, contrast, zoom, and layout changes by screen size. Verify every theme, language, and state. If there is motion, offer an equal reduced-motion experience.
Outcome: Use or define Parallax Scrolling to make the visual experience clear and easy to use. User context: A background landscape moves slower than the front text. This makes it seem farther away. Design concept to apply: Parallax Scrolling. Why it fits: Use a small parallax effect when depth helps explain the story or space. Do not use it when: Never use strong parallax on reading pages or without a reduced-motion option. Design requirements: Set the content order, shared design values, and reusable components. Define how the layout changes by screen size and state. Keep useful design choices separate from decoration. Inclusion and resilience: Check contrast, zoom, languages, themes, and reduced motion when needed. Do not use color or effects as the only way to show meaning. Acceptance criteria: The design stays clear on phones and desktops, at zoom, in every theme, and in all supported languages. Interactive states stay clear and consistent. Evidence and limits (evidence boundary): No single official standard controls the whole term. Its meaning may change across teams, platforms, or frameworks. Unknowns to confirm: Brand limits, amount of content, supported themes and languages, target devices, and design-system rules.
Check this request
Review the current use of Parallax Scrolling. Definition: Parallax scrolling makes layers move at different speeds while a page scrolls. The speed difference creates a sense of depth. Release checks: Check content order, shared design values, component consistency, contrast, zoom, and layout changes by screen size. Verify every theme, language, and state. If there is motion, offer an equal reduced-motion experience. Before changing code, report the evidence you found, gaps, severity, and the smallest safe fix.