unocss

Instant atomic CSS engine with Tailwind CSS compatibility and flexible preset-based architecture. UnoCSS is an instant atomic CSS engine designed to be flexible and extensible. The core is un-opinionated - all CSS utilities are provided via presets. It's a superset of Tailwind CSS, so you can reuse your Tailwind knowledge for basic syntax usage. Important: Before writing UnoCSS code, agents should check for uno.config.* or unocss.config.* files in the project root to understand what presets, rules, and shortcuts are available. If the project setup is unclear, avoid using attributify mode and other advanced features - stick to basic class usage. The skill is based on UnoCSS 66.x, generated at 2026-01-28. - 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 - Includes transformers for variant grouping, CSS directives (@apply, @screen, theme()), and JSX attributify support - Integrates with Vite and Nuxt; always check for uno.config.* or unocss.config.* files before writing code to understand available presets and rules