unocss

Generate atomic CSS on demand from HTML and JSX markup.

Updated Jan 11, 2026

Search Tags:#theming #utility-classes #UnoCSS #atomic-css #frontend-tooling #tooling-automation #responsive-variants

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npx skills add https://github.com/UmmItKin/ummit.dev --skill unocss-ummitkin

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Please help me install this Agent Skill.
Skill: unocss
Source: https://github.com/UmmItKin/ummit.dev/tree/main/.agents/skills/unocss
Command: npx skills add https://github.com/UmmItKin/ummit.dev --skill unocss-ummitkin

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

UnoCSS provides instant atomic CSS utilities to speed up styling by generating only the needed CSS based on your markup.

Core Features & Use Cases

Generates atomic classes on demand from your HTML/JSX.
Supports presets, themes, and responsive variants for scalable design.
Use in dashboards, blogs, and apps to streamline styling.

Quick Start

Install UnoCSS in your project, configure uno.config.ts, and import the generated CSS (e.g., import 'virtual:uno.css') to enable on-demand styles.

Frequently Asked Questions about unocss

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

FAQPage Schema

How do I generate atomic CSS on demand to reduce CSS bloat?▼

Generating atomic CSS on demand reduces bloat by producing only the styles your markup actually uses. Instead of shipping large stylesheets, the engine scans your HTML or JSX and creates specific utility classes dynamically for rapid UI iteration.

Can I use UnoCSS with my existing frontend tooling and dashboards?▼

Yes, UnoCSS works with existing frontend tooling across dashboards, blogs, and apps. You install it in your project, configure the config file, and import the generated virtual CSS file to enable on-demand styles for rapid UI iteration.

How do I apply responsive variants and themes in atomic CSS?▼

You apply responsive variants and themes in atomic CSS by utilizing supported presets and configurations. This enables scalable design systems that generate appropriate utility classes on demand based on your specific markup and styling requirements.

What is the best way to set up UnoCSS for rapid UI iteration?▼

The best way to set up UnoCSS for rapid UI iteration is to install it in your project, configure the config file, and import the virtual CSS file. This enables on-demand atomic utility generation directly from your markup.

Does atomic CSS work with custom presets for scalable design?▼

Yes, atomic CSS works with custom presets to support scalable design. By configuring presets, themes, and responsive variants, you can rapidly iterate UI components in modern frontend apps while generating only the necessary styles on demand.