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Tailwind CSS v4 styling conventions. Use when working with CSS, Tailwind utilities, or customizing the theme in Laravel projects.

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Source SKILL.md: https://github.com/majiayu000/claude-skill-registry/blob/HEAD/skills/design/tailwind-codebar-ag-coding-guidelines/SKILL.md

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Name: Tailwind CSS Description: Tailwind CSS v4 styling conventions. Use when working with CSS, Tailwind utilities, or customizing the theme in Laravel projects. Compatible Agents: general-purpose, frontend Tags: resources/css/**/*.css, laravel, tailwind, css, vite, styling

Rules

  • Tailwind CSS v4 utility classes only — no custom CSS classes
  • Theme customization via @theme directive in resources/css/app.css
  • Do not create custom .css class selectors — compose utilities in markup instead
  • Vite is the build tool with @tailwindcss/vite plugin
  • Entry point: resources/css/app.css
  • Use @source directive to include Blade and Livewire paths for class scanning
  • Use responsive prefixes (sm:, md:, lg:) for responsive design
  • Use dark mode variant (dark:) when dark mode is supported
  • Extract Blade components for complex repeated utility patterns — keep utility strings readable

Examples

/* resources/css/app.css — theme customization via @theme */
@import "tailwindcss";

@theme {
    --color-primary-500: #3b82f6;
    --color-accent-500: #8b5cf6;
    --font-sans: "Inter", system-ui, sans-serif;
}

@source "../views/**/*.blade.php";
@source "../../app/Livewire/**/*.php";

{{-- Compose utilities in markup — no custom CSS classes --}}
<div class="rounded-lg shadow-sm p-4 sm:p-6 lg:p-8 transition ease-in-out duration-150">
    <h2 class="text-lg font-semibold text-gray-900 dark:text-gray-100">Title</h2>
</div>

{{-- Extract complex patterns to components — avoid long utility strings in views --}}
<x-card class="p-4">
    {{ $slot }}
</x-card>

Anti-Patterns

  • Creating custom .my-class { ... } selectors in CSS files
  • Using inline styles or <style> tags instead of Tailwind utilities
  • Long, repeated utility strings in Blade views — extract to components
  • Missing @source directives for Blade/Livewire paths (classes won't be scanned)
  • Not using responsive prefixes when layout changes by viewport
  • Hardcoding colors instead of using theme variables via @theme

References