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unocss

Generate on-demand atomic CSS utilities at build time with UnoCSS.

3|1|Updated Feb 6, 2026
Search Tags:#theming#tailwind#utility-first#presets#variants#UnoCSS#atomic-css
One-click install
npx skills add https://github.com/wfvue/SynapSH --skill unocss-wfvue
Or copy as Structured Prompt for Agent▼
Please help me install this Agent Skill.
Skill: unocss
Source: https://github.com/wfvue/SynapSH/tree/main/.agent/skills/unocss
Command: npx skills add https://github.com/wfvue/SynapSH --skill unocss-wfvue

SYSTEM DOCUMENTATION & REQUIREMENTS

💡 This Skill includes references (resource) components.

What problem does it solve?

UnoCSS provides instant atomic CSS utilities generated on demand, replacing bulky handcrafted CSS and enabling scalable, maintainable styling across projects.

Core Features & Use Cases

  • Flexible, unopinionated core with presets (Wind, Icons, Attributify) that delivers Tailwind-like ergonomics without locking you into a single framework.
  • Supports theming, responsive variants, and ecosystem integrations to build cohesive design systems quickly.
  • Use cases include rapid prototyping, large-scale UI systems, and IDE-friendly configuration for rapid iteration.

Quick Start

Install UnoCSS in your project, define uno.config.ts with your chosen presets, and import the generated stylesheet (uno.css or virtual:uno.css) to start using utilities.

Frequently Asked Questions about unocss

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How does atomic CSS generated on demand help scale web project styling?▼

Atomic CSS generates only the utilities you use at build time, eliminating bulky handcrafted stylesheets. This on-demand approach keeps projects maintainable and scalable as your UI grows without increasing CSS bundle size.

Can I get Tailwind-like utility classes without being locked into a specific framework?▼

Yes, you can use presets like Wind to get Tailwind-like ergonomics without framework lock-in. The unopinionated core lets you configure utilities dynamically for rapid prototyping and large-scale UI systems.

How do I set up atomic CSS utilities for rapid prototyping and theming?▼

Install UnoCSS, define your presets in a configuration file, and import the generated virtual stylesheet. This enables instant access to utilities for theming, responsive variants, and building cohesive design systems.

What are the limitations of using atomic CSS for large-scale UI systems?▼

Atomic CSS relies heavily on build-time generation and preset configurations. Projects requiring highly custom, non-utility-based CSS layouts might face limitations, and managing complex responsive variants demands careful configuration.

Does this atomic CSS engine support attributify and icons presets?▼

Yes, the engine supports attributify and icons presets alongside theming and responsive variants. These presets allow you to build cohesive design systems quickly using attributes and icons as utilities.

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