A CSS framework is basically a library that is made up of several CSS style sheets that can be used by web developers and web designers. It can be used for creating user-friendly and browser-compatible websites. It saves your time as you don't need to begin from scratch. Some of the most popular CSS frameworks are Bootstrap, Foundation, Bulma, Tailwind CSS, Milligram, Gumby, Semantic UI, Materialize, and Ulkit.
