| name | tailwindcss |
| description | Build UIs with Tailwind CSS — utility classes, responsive design, dark mode, custom configuration, component patterns, animations, plugins, and design system setup. Use when tasks involve styling web applications, configuring design tokens, building responsive layouts, or migrating from other CSS approaches. |
| license | Apache-2.0 |
| compatibility | Requires Node.js 16+ |
| metadata | {"author":"terminal-skills","version":"1.0.0","category":"development","tags":["tailwindcss","css","frontend","responsive","design-system"]} |
Tailwind CSS
Utility-first CSS framework for building custom designs without writing CSS files. Design tokens enforced through configuration.
Setup
npm install -D tailwindcss postcss autoprefixer
npx tailwindcss init -p
@tailwind base;
@tailwind components;
@tailwind utilities;
import type { Config } from 'tailwindcss';
export default {
content: ['./src/**/*.{js,ts,jsx,tsx,mdx}'],
theme: { extend: {} },
plugins: [],
} satisfies Config;
Core Utilities
Layout
<div class="flex items-center justify-between gap-4">
<div class="flex-1">Grows to fill</div>
<div class="flex-shrink-0">Fixed width</div>
</div>
<div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-6">
<div>Card 1</div>
<div>Card 2</div>
<div>Card 3</div>
</div>
<div class="container mx-auto px-4 max-w-5xl">Centered content</div>
<div class="relative">
<div class="absolute top-0 right-0">Badge</div>
</div>
Typography
<h1 class="text-3xl font-bold text-gray-900">Heading</h1>
<p class="text-base text-gray-600 leading-relaxed">Body text</p>
<span class="text-sm text-gray-400 uppercase tracking-wide">Label</span>
<a class="text-blue-600 hover:text-blue-800 underline">Link</a>
<p class="truncate">Long text gets ellipsis...</p>
<p class="line-clamp-3">Multi-line truncate at 3 lines</p>
Spacing
<div class="p-4">16px all sides</div>
<div class="px-6 py-3">24px horizontal, 12px vertical</div>
<div class="mt-8 mb-4">Top 32px, bottom 16px</div>
<div class="mx-auto w-96">Centered block</div>
<div class="flex gap-4">Consistent 16px gaps</div>
Colors and Backgrounds
<div class="bg-white text-gray-900">Light theme</div>
<div class="bg-gray-900 text-white">Dark theme</div>
<div class="bg-blue-500 text-white">Brand color</div>
<div class="bg-gradient-to-r from-blue-500 to-purple-600 text-white">Gradient</div>
<div class="bg-black/50">50% opacity black overlay</div>
Borders and Shadows
<div class="border border-gray-200 rounded-lg">Card</div>
<div class="border-2 border-blue-500 rounded-full">Highlighted</div>
<div class="shadow-sm">Subtle shadow</div>
<div class="shadow-lg">Elevated card</div>
<div class="ring-2 ring-blue-500 ring-offset-2">Focus ring</div>
Responsive Design
Mobile-first breakpoints: sm: (640px), md: (768px), lg: (1024px), xl: (1280px), 2xl: (1536px).
<div class="grid grid-cols-1 md:grid-cols-2 lg:grid-cols-3 gap-4">
<div>Card</div>
</div>
<nav class="hidden lg:flex">Desktop nav</nav>
<button class="lg:hidden">Mobile menu</button>
<h1 class="text-2xl md:text-3xl lg:text-4xl">Scales up</h1>
<section class="px-4 md:px-8 lg:px-16">Content</section>
Dark Mode
export default {
darkMode: 'class',
};
<div class="bg-white dark:bg-gray-900 text-gray-900 dark:text-gray-100">
<h2 class="text-gray-800 dark:text-gray-200">Adapts to theme</h2>
<button class="bg-blue-500 dark:bg-blue-600 hover:bg-blue-600 dark:hover:bg-blue-500">
Action
</button>
</div>
States
<button
class="bg-blue-500 hover:bg-blue-600 active:bg-blue-700
focus:outline-none focus:ring-2 focus:ring-blue-500 focus:ring-offset-2"
>
Button
</button>
<button class="disabled:opacity-50 disabled:cursor-not-allowed" disabled>Disabled</button>
<div class="group cursor-pointer">
<h3 class="group-hover:text-blue-600">Title</h3>
<p class="group-hover:text-gray-600">Description</p>
</div>
<ul>
<li class="first:pt-0 last:pb-0 py-3 border-b last:border-0">Item</li>
</ul>
Component Patterns
Card
function Card({ title, description, image }: CardProps) {
return (
<div
className="bg-white rounded-lg shadow-card overflow-hidden
hover:shadow-lg transition-shadow"
>
{image && <img src={image} alt="" className="w-full h-48 object-cover" />}
<div className="p-6">
<h3 className="text-lg font-semibold text-gray-900 mb-2">{title}</h3>
<p className="text-sm text-gray-600 leading-relaxed">{description}</p>
</div>
</div>
);
}
Input
function Input({ label, error, ...props }: InputProps) {
return (
<div>
{label && <label className="block text-sm font-medium text-gray-700 mb-1">{label}</label>}
<input
className={`w-full px-3 py-2 border rounded-lg text-sm
placeholder:text-gray-400
focus:outline-none focus:ring-2 focus:ring-blue-500 focus:border-transparent
${error ? 'border-red-500' : 'border-gray-300'}`}
{...props}
/>
{error && <p className="mt-1 text-xs text-red-500">{error}</p>}
</div>
);
}
Animations
<div class="animate-spin">Spinner</div>
<div class="animate-pulse">Skeleton loader</div>
<div class="animate-bounce">Bouncing arrow</div>
<div class="transition-all duration-300 ease-in-out hover:scale-105">Smooth scale on hover</div>
theme: {
extend: {
keyframes: {
'fade-in': {
'0%': { opacity: '0', transform: 'translateY(8px)' },
'100%': { opacity: '1', transform: 'translateY(0)' },
},
},
animation: {
'fade-in': 'fade-in 0.3s ease-out',
},
},
},
Custom Configuration
theme: {
extend: {
colors: {
brand: {
50: '#f0f9ff',
500: '#0ea5e9',
900: '#0c4a6e',
},
},
fontFamily: {
sans: ['Inter', 'system-ui', 'sans-serif'],
mono: ['JetBrains Mono', 'monospace'],
},
spacing: {
'18': '4.5rem',
},
maxWidth: {
'prose': '65ch',
},
},
},
Plugins
import forms from '@tailwindcss/forms';
import typography from '@tailwindcss/typography';
import containerQueries from '@tailwindcss/container-queries';
export default {
plugins: [
forms,
typography,
containerQueries,
],
};
<article class="prose prose-lg max-w-none">
<h1>This is styled automatically</h1>
<p>No utility classes needed for CMS content.</p>
</article>
<div class="@container">
<div class="@md:flex @md:gap-4">Responds to container, not viewport</div>
</div>
Tailwind with clsx/cn
import { clsx, type ClassValue } from 'clsx';
import { twMerge } from 'tailwind-merge';
export function cn(...inputs: ClassValue[]) {
return twMerge(clsx(inputs));
}
<div
className={cn(
'px-4 py-2 rounded',
variant === 'primary' && 'bg-blue-500 text-white',
variant === 'secondary' && 'bg-gray-100 text-gray-700',
className,
)}
/>;
Guidelines
- Mobile-first — write base styles for mobile, add
md:, lg: for larger screens
- Use
cn() or clsx for conditional classes — string concatenation gets messy fast
- Constrain the config — override defaults (not extend) for colors, spacing, and fonts to enforce the design system
@apply sparingly — use it for styles that repeat verbatim across many elements (like .prose content). If you're writing @apply everywhere, you're writing CSS with extra steps.- Extract components, not classes — instead of creating a
.btn-primary utility, create a <Button> component. That's the Tailwind way.
- Install
tailwind-merge — prevents px-4 px-6 from both applying. twMerge picks the last one correctly.
- Use
group and peer over JS — many hover/focus states that seem to need JavaScript can be done with group-hover: and peer-checked:
- Dark mode from day one — adding dark mode later means touching every component. Set up
dark: variants while building.
