Tailwind CSS is often referred to as a ________ framework due to its approach to CSS classes.

Tailwind CSS is often described as a utility-first framework because of its approach to CSS classes. It provides a set of low-level utility classes that can be composed to build designs directly in the markup. Understanding the utility-first approach and the use of utility classes is key to effectively using Tailwind CSS and achieving a modular and maintainable codebase.