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agent-skills/skills/unocss/references/preset-mini.md
Jason Woltje f5792c40be feat: Complete fleet — 94 skills across 10+ domains
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2026-02-16 16:27:42 -06:00

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---
name: preset-mini
description: Minimal preset with essential utilities for UnoCSS
---
# Preset Mini
The minimal preset with only essential rules and variants. Good starting point for custom presets.
## Installation
```ts
import { defineConfig, presetMini } from 'unocss'
export default defineConfig({
presets: [
presetMini(),
],
})
```
## What's Included
Subset of `preset-wind3` with essential utilities aligned to CSS properties:
- Basic spacing (margin, padding)
- Display (flex, grid, block, etc.)
- Positioning (absolute, relative, fixed)
- Sizing (width, height)
- Colors (text, background, border)
- Typography basics (font-size, font-weight)
- Borders and border-radius
- Basic transforms and transitions
## What's NOT Included
Opinionated or complex Tailwind utilities:
- `container`
- Complex animations
- Gradients
- Advanced typography
- Prose classes
## Use Cases
1. **Building custom presets** - Start with mini and add only what you need
2. **Minimal bundle size** - When you only need basic utilities
3. **Learning** - Understand UnoCSS core without Tailwind complexity
## Dark Mode
Same as preset-wind3:
```ts
presetMini({
dark: 'class' // or 'media'
})
```
```html
<div class="dark:bg-red:10" />
```
Class-based:
```css
.dark .dark\:bg-red\:10 {
background-color: rgb(248 113 113 / 0.1);
}
```
Media query:
```css
@media (prefers-color-scheme: dark) {
.dark\:bg-red\:10 {
background-color: rgb(248 113 113 / 0.1);
}
}
```
## CSS @layer Variant
Native CSS layer support:
```html
<div class="layer-foo:p4" />
```
```css
@layer foo {
.layer-foo\:p4 {
padding: 1rem;
}
}
```
## Theme Customization
```ts
presetMini({
theme: {
colors: {
veryCool: '#0000ff',
brand: {
primary: 'hsl(var(--hue, 217) 78% 51%)',
}
},
}
})
```
**Note:** `breakpoints` property is overridden, not merged.
## Options
```ts
presetMini({
// Dark mode: 'class' | 'media' | { light: string, dark: string }
dark: 'class',
// Generate [group=""] instead of .group for attributify
attributifyPseudo: false,
// CSS variable prefix (default: 'un-')
variablePrefix: 'un-',
// Utility prefix
prefix: undefined,
// Preflight generation: true | false | 'on-demand'
preflight: true,
})
```
## Building on Mini
Create custom preset extending mini:
```ts
import { presetMini } from 'unocss'
import type { Preset } from 'unocss'
export const myPreset: Preset = {
name: 'my-preset',
presets: [presetMini()],
rules: [
// Add custom rules
['card', { 'border-radius': '8px', 'box-shadow': '0 2px 8px rgba(0,0,0,0.1)' }],
],
shortcuts: {
'btn': 'px-4 py-2 rounded bg-blue-500 text-white',
},
}
```
<!--
Source references:
- https://unocss.dev/presets/mini
-->