Tailwind CSS is a utility-first CSS framework that helps teams build modern websites and interfaces directly in their markup. Its class-based approach speeds up layout, spacing, typography, color, and responsive work without forcing you to context-switch into separate stylesheets.

The homepage highlights modern CSS features like container queries, dark mode, logical properties, and CSS variables, making it clear Tailwind is designed for production UI development rather than visual mockups. It’s a core workflow tool for developers building websites and apps with a highly composable design system.