The article introduces Tailwind CSS, a low-level CSS framework that provides reusable utility classes for building websites with a distinctive look and feel. It explains how to use the framework by creating a basic HTML page, applying various classes to style elements, and understanding the different aspects of styling such as text size, color, alignment, and borders. The article also covers hover styles, buttons, and optimization techniques to reduce the size of the CSS file. Finally, it discusses criticism of Tailwind CSS and offers suggestions for managing long class lists, including templating features and CSS wrapper classes.