以下是一些受欢迎的开源 CSS 样式库：
Bootstrap：https://getbootstrap.com/
Materialize CSS：https://materializecss.com/
Bulma：https://bulma.io/
Foundation：https://foundation.zurb.com/
Semantic UI：https://semantic-ui.com/
Tailwind CSS：https://tailwindcss.com/
Pure.css：https://purecss.io/
UIKit：https://getuikit.com/
Spectre.css：https://picturepan2.github.io/spectre/
https://getbootstrap.com/
https://materializecss.com/
https://bulma.io/
https://foundation.zurb.com/
https://semantic-ui.com/
https://tailwindcss.com/
https://purecss.io/
https://getuikit.com/
https://picturepan2.github.io/spectre/
