What is TailwindCSS?
Tailwind CSS is an open-source, MIT-licensed utility-first CSS framework: instead of pre-built components, it provides low-level utility classes composed directly in markup to build custom designs. Tailwind Labs, the team behind it, joined Shopify in September 2026; the framework and its other open-source projects remain free and MIT-licensed, though sign-ups for the paid Tailwind Plus/ui.sh products closed to new customers as part of that move.
The homepage describes classes like flex, pt-4, text-center and rotate-90 that can be composed to build any design. Tailwind scans HTML files, JavaScript components and other templates for class names, generates the matching styles and writes them to a static CSS file. The installation guide recommends the Vite plugin for frameworks such as Laravel, SvelteKit, React Router, Nuxt and SolidJS, and the install step is a single npm command that adds tailwindcss and @tailwindcss/vite.
The framework uses CSS layers so teams do not have to worry about specificity issues, and it supports container queries, dark mode and responsive variants. The site says partners and sponsors make it possible for a team of designers and engineers to maintain the framework full-time.
Key capabilities
- Utility classes Low-level classes for spacing, layout, color, typography and more.
- Build tooling A CLI/PostCSS plugin that generates only the CSS actually used.
- Design tokens A themeable configuration for consistent design values.
Where TailwindCSS fits
- Utility-first styling Compose classes to build custom designs
- Responsive design Breakpoint variants on any utility
- Modern CSS Designed around current CSS capabilities
- Open source MIT-licensed framework maintained with Shopify support
Install
npm install tailwindcss @tailwindcss/viteReviews of TailwindCSS
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