unocss

Instant atomic CSS engine with Tailwind CSS compatibility and flexible preset-based architecture.

antfu/skillsUpdated Apr 8, 2026

Works with

Claude CodeCursorClineWindsurfCodexGooseGitHub CopilotZed

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Install Skill

Run in your terminal

$npx skills add https://github.com/antfu/skills --skill unocss

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installs

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this week

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What it does

  • 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

Category

Frontend

Repository

antfu/skills

Last updated

Apr 8, 2026

Installation Guide

How to use unocss on Cursor

AI-first code editor with Composer

1

Prerequisites

Before installing skills in Cursor, ensure your development environment meets these requirements:

  • Cursor installed and configured on your machine
  • Node.js 16+ with npm — verify with node --version
  • Active project directory where you want to add unocss
2

Run the install command

Execute the skills CLI command in your project's root directory to begin installation:

$npx skills add https://github.com/antfu/skills --skill unocss

Fetches unocss from antfu/skills and configures it for Cursor.

3

Select Cursor when prompted

The CLI shows a list of agents. Use arrow keys and space to select Cursor:

◆ Which agents do you want to install to?
│ ── Universal (.agents/skills) ────────────────
│ · Cline · Codex · Goose · Windsurf
│ ●Cursor(selected)
│ · Cursor · Aider · Continue
4

Verify installation

Confirm successful installation by checking the skill directory location:

.cursor/skills/unocss

Restart Cursor to activate unocss. Access via /unocss in your agent's command palette.

Security Notice

We perform automated surface-level scans (Gen AI Scanner, Socket, Snyk) during installation. These checks detect common vulnerabilities but do not guarantee complete security. Always review skill source code and verify the publisher's reputation before production use.

Skills execute code in your environment. Always review source, verify the publisher, and test in isolation before production.

Documentation

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.

Core

Topic Description Reference
Configuration Config file setup and all configuration options core-config
Rules Static and dynamic rules for generating CSS utilities core-rules
Shortcuts Combine multiple rules into single shorthands core-shortcuts
Theme Theming system for colors, breakpoints, and design tokens core-theme
Variants Apply variations like hover:, dark:, responsive to rules core-variants
Extracting How UnoCSS extracts utilities from source code core-extracting
Safelist & Blocklist Force include or exclude specific utilities core-safelist
Layers & Preflights CSS layer ordering and raw CSS injection core-layers

Presets

Main Presets

Topic Description Reference
Preset Wind3 Tailwind CSS v3 / Windi CSS compatible preset (most common) preset-wind3
Preset Wind4 Tailwind CSS v4 compatible preset with modern CSS features preset-wind4
Preset Mini Minimal preset with essential utilities for custom builds preset-mini

Feature Presets

Topic Description Reference
Preset Icons Pure CSS icons using Iconify with any icon set preset-icons
Preset Attributify Group utilities in HTML attributes instead of class preset-attributify
Preset Typography Prose classes for typographic defaults preset-typography
Preset Web Fonts Easy Google Fonts and other web fonts integration preset-web-fonts
Preset Tagify Use utilities as HTML tag names preset-tagify
Preset Rem to Px Convert rem units to px for utilities preset-rem-to-px

Transformers

Topic Description Reference
Variant Group Shorthand for grouping utilities with common prefixes transformer-variant-group
Directives CSS directives: @apply, @screen, theme(), icon() transformer-directives
Compile Class Compile multiple classes into one hashed class transformer-compile-class
Attributify JSX Support valueless attributify in JSX/TSX transformer-attributify-jsx

Integrations

Topic Description Reference
Vite Integration Setting up UnoCSS with Vite and framework-specific tips integrations-vite
Nuxt Integration UnoCSS module for Nuxt applications integrations-nuxt

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Use Cases

Task Automation & Efficiency

Automate repetitive workflows and reduce manual effort

Example

Generate reports, summarize documents, draft communications

Save 3-5 hours per week on routine tasks

Knowledge Enhancement

Learn new skills, understand complex topics, get expert guidance

Example

Explain concepts, provide examples, suggest learning resources

Accelerate learning and skill development by 2x

Quality Improvement

Enhance output quality through reviews, suggestions, and refinements

Example

Review drafts, suggest improvements, catch errors

Improve work quality by 30-40% with less effort

Implementation Guide

Prerequisites

  • Claude Desktop or compatible AI client with skill support
  • Clear understanding of task or problem to solve
  • Willingness to iterate and refine outputs

Time Estimate

15-45 minutes depending on use case complexity

Steps

  1. 1Install skill using provided installation command
  2. 2Test with simple use case relevant to your work
  3. 3Evaluate output quality and relevance
  4. 4Iterate on prompts to improve results
  5. 5Integrate into regular workflow if valuable

Common Pitfalls

  • Expecting perfect results without iteration
  • Not providing enough context in prompts
  • Using skill for tasks outside its intended scope
  • Accepting outputs without review and validation

Best Practices

✓ Do

  • +Start with clear, specific prompts
  • +Provide relevant context and constraints
  • +Review and refine all outputs before using
  • +Iterate to improve output quality
  • +Document successful prompt patterns

✗ Don't

  • Don't use without understanding skill limitations
  • Don't skip validation of outputs
  • Don't share sensitive information in prompts
  • Don't expect skill to replace human judgment

💡 Pro Tips

  • Be specific about desired format and style
  • Ask for multiple options to choose from
  • Request explanations to understand reasoning
  • Combine AI efficiency with human expertise

When to Use This

✓ Use when

Use when skill capabilities match your task, clear ROI on time saved, and you can validate outputs. Best for repetitive tasks, learning, and quality improvement.

✗ Avoid when

Avoid when task requires deep expertise you can't validate, involves sensitive decisions, or when learning process is more valuable than speed of completion.

Learning Path

  1. 1Familiarize yourself with skill capabilities and limitations
  2. 2Start with low-risk, non-critical tasks
  3. 3Progress to more complex and valuable use cases
  4. 4Build expertise through regular use and experimentation

Related Skills

Reviews

4.659 reviews
  • H
    Hana TorresDec 28, 2024

    We added unocss from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.

  • J
    Jin HaddadDec 28, 2024

    unocss fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.

  • P
    Pratham WareDec 24, 2024

    Useful defaults in unocss — fewer surprises than typical one-off scripts, and it plays nicely with `npx skills` flows.

  • K
    Kabir SrinivasanDec 16, 2024

    Solid pick for teams standardizing on skills: unocss is focused, and the summary matches what you get after install.

  • H
    Hana SharmaDec 4, 2024

    Registry listing for unocss matched our evaluation — installs cleanly and behaves as described in the markdown.

  • K
    Kiara AndersonNov 19, 2024

    Solid pick for teams standardizing on skills: unocss is focused, and the summary matches what you get after install.

  • K
    Kabir SanchezNov 19, 2024

    unocss has been reliable in day-to-day use. Documentation quality is above average for community skills.

  • Y
    Yash ThakkerNov 15, 2024

    unocss is among the better-maintained entries we tried; worth keeping pinned for repeat workflows.

  • K
    Kabir RamirezNov 7, 2024

    We added unocss from the explainx registry; install was straightforward and the SKILL.md answered most questions upfront.

  • K
    Kaira KapoorOct 26, 2024

    unocss fits our agent workflows well — practical, well scoped, and easy to wire into existing repos.

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