Build responsive, mobile-first projects on the web with the world's most popular front-end component library.
Bootstrap is an open source toolkit for developing with HTML, CSS, and JS. Quickly prototype your ideas or build your entire app with our Sass variables and mixins, responsive grid system, extensive prebuilt components, and powerful plugins built on jQuery.
Bellows is a responsive, mobile-first accordion UI module for progressive disclosure on the web. Also Bellows supports jQuery.
Response is a jQuery plugin that provides tools for building performance-optimized, mobile-first responsive websites.
It's breakpoint sets use HTML5 data attributes to dynamically swap markup based on breakpoints so that rich content can be served progressively. Its API includes cross-browser event hooks, HTML5 dataset, and ways to get or test responsive properties.
Wallop Slider is a simple slider with its transitions controlled via CSS.