The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.
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Updated
Feb 22, 2026 - MDX
Sass is a stylesheet language with a main implementation in Ruby. It is an extension of CSS that makes improvements to the old stylesheet format, such as being able to declare variables and using a cleaner nesting syntax.
The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web.
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A design system built by IBM
Drag and drop page builder library written in vanilla javascript without dependencies or build tools.
He Ti (heti)Shi Zhuan Wei Zhong Wen Nei Rong Zhan Shi She Ji De Pai Ban Yang Shi Zeng Qiang . Ta Ji Yu Tong Xing De Zhong Wen Pai Ban Gui Fan Er Lai ,Ke Yi Wei Wang Zhan De Du Zhe Dai Lai Geng Hao De Wen Zhang Yue Du Ti Yan .
Open source CSS framework for data visualization.
Color scheme for UI design.
Modern framework to print the web correctly.
Open source admin template based on Bootstrap 5 and React.js
Created by Hampton Catlin, Natalie Weizenbaum, Chris Eppstein
Released November 28, 2006