Asking for a definition to "CSS libraries"

What is “CSS libraries”?

Hi. A CSS library, or collection of style rules, is a collection of data that you can import into your webpages that allow you to customize the styling of your page(s) in different ways. Each library will have its own set of rules, or key words, to use to style. Popular ones include Bootstrap, Font Awesome, and Sass, just to name a few. Hope this is helpful.