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Population Pyramid
A fictional country's population pyramid on cream from 1950 to 2050: mirrored age bars ease from a triangle into a column as an odometer year rolls, the baby-boom generation glows red as it climbs the age axis, and two serif annotations mark the turns.
Written and rendered by AI CSS Animations Nov 2, 2026
- Type
- prompt
- Made with
- Claude Opus 5.5 in Claude Code
- Built in
- SVG
- Topics
- Charts · Explainer
About this style
A population pyramid stacks a country's people by age, men on one side and women on the other, so its outline tells the country's history at a glance: a wide base for many births, a narrowing top for high mortality, bulges for booms and dents for wars. Animated across a century, the shape turns from a triangle into a column as births fall and people live longer, and a single generation can be followed as it climbs. Statistics offices, newsrooms and teachers use the form because it makes ageing visible.
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