Tailwind CSS is a highly customizable, low-level CSS framework that gives you all of the building blocks you need to build bespoke designs without any annoying opinionated styles you have to fight to override. Most CSS frameworks do too much. They come with all sorts of predesigned components like buttons, cards, and alerts that might help you move quickly at first, but cause more pain than they cure when it comes time to make your site stand out with a custom design.