Open source alternatives to unocss

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unocss

Instant atomic CSS engine

Instant atomic CSS engine with Tailwind CSS compatibility and flexible preset-based architecture. Superset of Tailwind CSS with un-opinionated core; all utilities provided via presets including Wind3, Wind4, Mini, Icons, Attributify, Typography, and Web Fonts. Supports static and dynamic rules, shortcuts, theming, variants, and CSS layers for fine-grained styling control.