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What is this?
Tailwind CSS is a utility-first CSS framework for rapidly building custom user interfaces by composing small, single-purpose classes directly in your markup.
Is this a CSS framework like Bootstrap with pre-built components, or something else?
It is utility-first: instead of shipping pre-designed components, it gives you low-level utility classes (like flex, pt-4, text-center) that you combine to build custom designs.
How do I add it to a project?
You install it via your package manager and integrate it with PostCSS or your build tool; full setup instructions are in the official documentation.
Does it depend on PostCSS?
Yes, Tailwind integrates as a PostCSS plugin and lists postcss among its topics, though newer versions can also run via a dedicated Vite/CLI build pipeline.
Is there a learning curve to writing HTML full of utility classes?
Not explicitly detailed in this README, but the utility-first approach means markup becomes dense with class names rather than semantic CSS, which some developers find takes adjustment.
Does Tailwind ship a build tool or just the CSS engine?
The repo includes a Rust-based engine (tests run via cargo test) alongside the JS tooling, reflecting a performance-focused rewrite of the core build pipeline in recent versions.
What are similar projects?
tachyons, daisyui, materialize, bootstrap-table, Core-Framework, uikit, spectre, bulma
Which topics is it in?
postcss, css-framework, responsive, tailwindcss, design, css, utility, html, ui, web-app, web-development, npm