Tailwind CSS v4 — Complete Guide

What Is Tailwind CSS v4? — Next Generation CSS Framework

Tailwind CSS v4 is a CSS-first framework rebuild using the Lightning CSS engine with unified variants, container queries, and zero-configuration setup.

Migrating from Tailwind CSS v3 to v4 — Complete Upgrade Guide

Migrate from Tailwind CSS v3 to v4 by replacing JavaScript config with CSS @theme, updating build tools, adapting variants, and testing utilities.

Tailwind CSS v4 CSS-First Configuration Using @theme

Tailwind CSS v4 CSS-first configuration uses the @theme directive to define design tokens as CSS custom properties, replacing the JavaScript config file.

Tailwind CSS v4 theme() Function — Referencing Design Tokens

Tailwind CSS v4 theme() function references design tokens from @theme in custom CSS, enabling consistent token usage across Tailwind utilities and hand-written styles.

Tailwind CSS v4 Variants — Unified Variant System

Tailwind CSS v4 introduces a unified variant system with the @variant directive for custom variants, same prefix syntax, and new compositional capabilities.

Tailwind CSS v4 Composing Variants for Complex State Combinations

Tailwind CSS v4 variant composition lets you combine multiple variants into one, creating complex state patterns like dark-mode-hover or desktop-only-focus.

Tailwind CSS v4 Custom Variants — Advanced Selector Patterns

Tailwind CSS v4 custom variants with @variant support complex selectors, media queries, container queries, and custom functions for conditional styling.

Tailwind CSS v4 Dark Mode — Configuration and Custom Strategies

Tailwind CSS v4 dark mode uses @variant dark for configuration, supporting system preference, class toggle, and custom selectors with CSS-first setup.

Tailwind CSS v4 Container Queries — Container-Based Responsive Design

Tailwind CSS v4 container queries are built-in, using @container and @sm @md @lg prefixes for responsive styling based on container width instead of viewport.

Tailwind CSS v4 New Utilities — What's New and Improved

Tailwind CSS v4 introduces new utilities including negative values, arbitrary properties, field-sizing, anchor positioning, and enhanced gradient support.

Tailwind CSS v4 Custom Themes — Creating Complete Design Systems

Tailwind CSS v4 custom themes use @theme to define colors, typography, spacing, and design tokens, with @variant for theme-specific selectors and multiple theme support.

Tailwind CSS v4 Color Palette — CSS Color Function and Dynamic Colors

Tailwind CSS v4 color palette uses modern CSS color functions (oklch, hsl, rgb) for dynamic color generation, with improved opacity control and color mixing.

Tailwind CSS v4 CSS Generators and Functions for Dynamic Tokens

Tailwind CSS v4 CSS generators and functions like color-mix, calc, min, max, clamp, and custom @property rules enable dynamic design token generation.

Tailwind CSS v4 Arbitrary Values — Dynamic and Custom Utilities

Tailwind CSS v4 arbitrary values support bracket syntax [value] for any utility, with improved syntax, automatic unit inference, and CSS function support.

Tailwind CSS v4 Override and Customization Strategy

Tailwind CSS v4 override strategy covers @layer for cascade control, @variant for custom selectors, @plugin for extensions, and CSS specificity management.

Tailwind CSS v4 Performance — Lightning CSS and Build Optimization

Tailwind CSS v4 performance leverages the Lightning CSS engine for 10-100x faster builds, smaller output, and incremental compilation for development speed.

Tailwind CSS v4 Third-Party Integration — Frameworks and Tooling

Tailwind CSS v4 integrates with Vite, Next.js, Remix, Laravel, and other frameworks via @tailwindcss/vite plugin, CLI, or framework-specific packages.

Tailwind CSS v4 Plugin System — @plugin Directive and Custom Extensions

Tailwind CSS v4 plugin system uses the @plugin CSS directive to load official, community, and custom plugins with CSS-first configuration.

Tailwind CSS v4 Standalone CLI — Zero-Config CSS Generation

Tailwind CSS v4 standalone CLI generates CSS from HTML without npm or build tools, using a binary that scans files and outputs optimized CSS.

Tailwind CSS v4 Vite Plugin — Deep Integration and Configuration

Tailwind CSS v4 Vite plugin (@tailwindcss/vite) provides deep framework integration with HMR, optimized builds, and automatic CSS processing without PostCSS.

Tailwind CSS v4 PostCSS and Build Tools — Configuration Guide

Tailwind CSS v4 works with PostCSS, Vite, CLI, and other build tools. This guide covers PostCSS configuration, build pipelines, and integration with popular tools.

Tailwind CSS v4 Responsive Utilities — Breakpoints and Adaptive Design

Tailwind CSS v4 responsive utilities include unified breakpoints, container queries, dynamic viewport units, and improved responsive variant syntax for adaptive designs.

Tailwind CSS v4 Animations and Transitions — Motion Design Guide

Tailwind CSS v4 introduces CSS-driven animations with the @keyframes theme system, enhanced transition utilities, scroll-driven animations, and view transitions.

Tailwind CSS v4 Deployment and Optimization — Production Guide

Tailwind CSS v4 deployment covers production build optimization, Lightning CSS minification, content purging, CDN delivery, and framework-specific deployment strategies.

Tailwind CSS v4 Project — Build a Modern Dashboard from Scratch

Build a complete modern admin dashboard with Tailwind CSS v4 featuring CSS-first config, container queries, dark mode, animations, and responsive layout.