Aspect Ratio
Aspect ratio tells how wide an element is compared with how tall it is.
Another example
A video placeholder keeps a 16:9 space before the video loads, so the page doesn't jump.
Main parts
- 01Outer constraint
- 02Content and spacing model
- 03Computed size or reflow result
Use it when
Use it for media, cards, canvases, and responsive placeholders whose shape is known.
Do not use it when
Never force a crop when every part of the image carries information.
Name used in code
aspect-ratio 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 Aspect Ratio to make the visual experience clear and easy to use. User context: A video placeholder keeps a 16:9 space before the video loads, so the page doesn't jump. Design concept to apply: Aspect Ratio. Why it fits: Use it for media, cards, canvases, and responsive placeholders whose shape is known. Do not use it when: Never force a crop when every part of the image carries information. 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): A formal document may still be a draft, release candidate, or final version. Check its status and browser or platform support. 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 Aspect Ratio. Definition: Aspect ratio tells how wide an element is compared with how tall it is. 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.