Tailwind CSS is a CSS framework used to build user interfaces (UI) on the web.
Tailwind CSS provides a collection of classes that can be applied to HTML elements, allowing web developers to create a consistent and manageable look quickly and easily.

Compared to other CSS frameworks such as Bootstrap or Foundation, Tailwind CSS is more focused on a utility-first approach, which means it prioritizes speed and flexibility in styling by using CSS classes that can be applied directly to HTML elements.
In addition, Tailwind CSS also provides useful features such as responsive design, dark mode, and very flexible customization.

Tailwind CSS has become popular among web developers due to its ability to speed up the development process and allow developers to create a consistent and manageable look more quickly and easily.