Popular CSS Libraries

  1. twbs/bootstrap

    The most popular HTML, CSS, and JavaScript framework for developing responsive, mobile first projects on the web. http://getbootstrap.com

    • 87K Stars
    • 36K Forks
  2. FortAwesome/Font-Awesome

    The iconic font and CSS toolkit http://fontawesome.io

    • 36K Stars
    • 6.0K Forks
  3. daneden/animate.css

    A cross-browser library of CSS animations. As easy to use as an easy thing. http://daneden.github.io/animate.css

    • 25K Stars
    • 5.7K Forks
  4. zurb/foundation

    The most advanced responsive front-end framework in the world. Quickly create prototypes and production code for sites that work on any kind of device. http://foundation.zurb.com

    • 20K Stars
    • 4.4K Forks
  5. driftyco/ionic

    Advanced HTML5 mobile development framework and SDK. Build incredible mobile apps with web technologies you already know and love. Best friends with AngularJS. http://ionicframework.com/

    • 19K Stars
    • 3.3K Forks
  6. necolas/normalize.css

    A collection of HTML element and attribute style-normalizations http://necolas.github.io/normalize.css/

    • 17K Stars
    • 3.8K Forks
  7. Semantic-Org/Semantic-UI

    Semantic is a UI component framework based around useful principles from natural language. http://www.semantic-ui.com

    • 20K Stars
    • 2.3K Forks
  8. Dogfalo/materialize

    Materialize, a CSS Framework based on Material Design http://materializecss.com

    • 13K Stars
    • 1.7K Forks
  9. yahoo/pure

    A set of small, responsive CSS modules that you can use in every web project. http://purecss.io/

    • 12K Stars
    • 1.5K Forks
  10. twbs/ratchet

    Build mobile apps with simple HTML, CSS, and JavaScript components. http://goratchet.com

    • 12K Stars
    • 1.3K Forks
  11. designmodo/Flat-UI

    Flat UI Free - Design Framework (html/css3/less/js). Flat UI is based on Bootstrap, a comfortable, responsive, and functional framework that simplifies the development of websites. http://designmodo.com/flat-free/

    • 10K Stars
    • 2.0K Forks
  12. dhg/Skeleton

    Skeleton: A Dead Simple, Responsive Boilerplate for Mobile-Friendly Development http://www.getskeleton.com

    • 9.8K Stars
    • 1.7K Forks
  13. h5bp/Effeckt.css

    A Performant Transitions and Animations Library http://h5bp.github.io/Effeckt.css

    • 9.9K Stars
    • 1.4K Forks
    • 6.5K Stars
    • 1.7K Forks
  14. Compass/compass

    Compass is a Stylesheet Authoring Environment that makes your website design simpler to implement and easier to maintain. http://compass-style.org

    • 6.5K Stars
    • 1.2K Forks
  15. olton/Metro-UI-CSS

    CSS styles for build Windows 8 Metro UI stylable interface http://metroui.org.ua/

    • 4.5K Stars
    • 1.7K Forks
  16. thoughtbot/bourbon

    A lightweight Sass tool set. http://bourbon.io

    • 6.3K Stars
    • 693 Forks
  17. uikit/uikit

    A lightweight and modular front-end framework for developing fast and powerful web interfaces. http://getuikit.com

    • 5.6K Stars
    • 1.1K Forks
  18. joshuaclayton/blueprint-css

    A CSS framework that aims to cut down on your CSS development time http://www.blueprintcss.org

    • 5.4K Stars
    • 607 Forks
  19. alexwolfe/Buttons

    A CSS button library built using Sass and Compass http://unicorn-ui.com/buttons/builder/

    • 4.5K Stars
    • 832 Forks
  20. stubbornella/oocss

    Object Oriented CSS Framework http://stubbornella.org/

    • 4.8K Stars
    • 648 Forks
  21. yui/yui3

    A library for building richly interactive web applications. http://yuilibrary.com/

    • 3.1K Stars
    • 1.1K Forks
  22. topcoat/topcoat

    CSS for clean and fast web apps http://topcoat.io

    • 4.1K Stars
    • 426 Forks
  23. chinchang/hint.css

    A tooltip library in CSS for your lovely websites. http://kushagragour.in/lab/hint/

    • 3.6K Stars
    • 453 Forks
  24. csswizardry/inuit.css

    Powerful, scalable, Sass-based, BEM, OOCSS framework. http://inuitcss.com

    • 3.9K Stars
    • 522 Forks
  25. nathansmith/960-Grid-System

    The 960 Grid System is an effort to streamline web development workflow. http://960.gs

    • 3.1K Stars
    • 514 Forks
  26. GumbyFramework/Gumby

    A Flexible, Responsive CSS Framework - Powered by Sass http://gumbyframework.com/

    • 2.9K Stars
    • 520 Forks
  27. ericam/susy

    Responsive layout toolkit for Sass http://susy.oddbird.net/

    • 2.9K Stars
    • 324 Forks
  28. Huddle/PhantomCSS

    Visual/CSS regression testing with PhantomJS https://github.com/Huddle/PhantomCSS

    • 3.2K Stars
    • 185 Forks
  29. zmoazeni/csscss

    A CSS redundancy analyzer that analyzes redundancy. http://zmoazeni.github.io/csscss/

    • 2.9K Stars
    • 142 Forks
  30. mojotech/jeet

    The most advanced, yet intuitive, grid system available for Sass or Stylus http://jeet.gs

    • 2.5K Stars
    • 243 Forks
  31. hakimel/Meny

    A three dimensional and space effecient menu http://lab.hakim.se/meny/

    • 2.1K Stars
    • 479 Forks
  32. madebysource/lesshat

    Smart LESS CSS mixins library. http://lesshat.com

    • 2.1K Stars
    • 291 Forks
  33. suitcss/suit

    Style tools for UI components http://suitcss.github.io/

    • 2.2K Stars
    • 115 Forks
  34. groundworkcss/groundwork

    Say hello to responsive design made easy. http://groundworkcss.github.io/

    • 1.6K Stars
    • 351 Forks
  35. mdo/preboot

    A collection of LESS mixins and variables for writing better CSS. http://getpreboot.com

    • 1.7K Stars
    • 197 Forks
  36. tylertate/semantic.gs

    The Semantic CSS Grid: Page Layout for Tomorrow http://Semantic.gs

    • 1.7K Stars
    • 297 Forks
    • 1.4K Stars
    • 408 Forks
  37. tj/nib

    Stylus mixins, utilities, components, and gradient image generation http://tj.github.com/nib/

    • 1.5K Stars
    • 237 Forks
  38. yairEO/fancyInput

    Makes typing in input fields fun with CSS3 effects https://github.com/yairEO/fancyInput

    • 1.8K Stars
    • 297 Forks
  39. jonikorpi/Frameless

    The spiritual successor to Less Framework http://framelessgrid.com/

    • 1.2K Stars
    • 266 Forks
  40. joshuagatcke/HTML-KickStart

    Ultra–Lean HTML Building Blocks for Rapid Website Production http://www.99lime.com

    • 1.2K Stars
    • 242 Forks
  41. csswizardry/csswizardry-grids

    Simple, fluid, nestable, flexible, Sass-based, responsive grid system. http://csswizardry.com/csswizardry-grids

    • 1.2K Stars
    • 184 Forks
    • 1.5K Stars
    • 99 Forks
  42. sapo/Ink

    An HTML5/CSS3 framework used at SAPO for fast and efficient website design and prototyping http://ink.sapo.pt

    • 1.3K Stars
    • 228 Forks
  43. daneden/Toast

    An insane grid. You’ve been warned. http://daneden.github.io/Toast

    • 1.1K Stars
    • 168 Forks
  44. jalxob/cool-kitten

    A parallax scrolling responsive framework https://github.com/jalxob/cool-kitten

    • 1.5K Stars
    • 553 Forks
  45. jenius/roots

    a toolkit for rapid advanced front-end development http://roots.cx

    • 1.2K Stars
    • 111 Forks
  46. nathansmith/unsemantic

    Fluid grid for mobile, tablet, and desktop. http://unsemantic.com

    • 1.1K Stars
    • 155 Forks
  47. paranoida/sass-mediaqueries

    Media Queries mixins for Sass - fully customizable and very easy to use. http://paranoida.github.com/sass-mediaqueries/

    • 950 Stars
    • 118 Forks
  48. artofrawr/profoundgrid

    Responsive grid for fixed & fluid layouts. http://www.profoundgrid.com

    • 962 Stars
    • 173 Forks
  49. nathansmith/formalize

    Teach your forms some manners! http://formalize.me

    • 1.3K Stars
    • 131 Forks
  50. heygrady/scss-blend-modes

    Using standard color blending functions in SASS. https://github.com/heygrady/scss-blend-modes

    • 800 Stars
    • 130 Forks
  51. Wolfr/clank

    Clank: open source prototyping framework for mobile apps http://getclank.com/

    • 938 Stars
    • 95 Forks
  52. fffunction/sassaparilla

    Start your web projects fast with Sassaparilla http://sass.fffunction.co

    • 1.1K Stars
    • 180 Forks
  53. IcaliaLabs/furatto

    It's a flat, fast and powerful front-end framework for rapid web development. https://github.com/IcaliaLabs/furatto

    • 865 Stars
    • 132 Forks
  54. richleland/pygments-css

    css files created from pygment's built-in styles http://richleland.github.io/pygments-css/

    • 562 Stars
    • 194 Forks
  55. matthewhartman/base

    Base is a super simple, responsive framework, built to work on all devices big, small and in-between. http://getbase.org

    • 629 Stars
    • 85 Forks
  56. cjdsie/wirefy

    Wirefy is a browser based responsive wireframe tool, which allows you to create functional wireframes using standard elements. Think of it as the foundation for your content to be built on. This allows you to focus on the content rather than the design to get faster sign off. Wirefy is not a one-solution answer. http://getwirefy.com

    • 707 Stars
    • 99 Forks
  57. designbyjake/sassline

    Set text on the web to a baseline grid with Sass & rems using a responsive modular-scale. https://sassline.com

    • 749 Stars
    • 62 Forks
    • 485 Stars
    • 123 Forks
  58. soyjavi/tuktuk

    Simple (but powerful) RWD Framework https://github.com/soyjavi/tuktuk

    • 566 Stars
    • 126 Forks
  59. maxmert/maxmertkit

    Maxmertkit, powerful, most customizable and easiest for usage mobile first front-end framework for web-development. http://maxmert.com

    • 531 Stars
    • 92 Forks
  60. csscomb/csscomb

    ! DEPRECATED ! Please use csscomb.js instead https://github.com/csscomb/csscomb.js

    • 663 Stars
    • 54 Forks
  61. gillesbertaux/andy

    Open-Source Collection of Useful SASS Mixins Library http://gillesbertaux.com/andy

    • 448 Stars
    • 58 Forks
  62. cmaddux/littlebox

    Super simple to implement, CSS-only icons. http://littlebox.cabmaddux.com

    • 550 Stars
    • 32 Forks
  63. typeplate/starter-kit

    A @grayghostvisuals and @zakkain Joint™ Typeplate is a “Typographic Starter Kit.” We don’t make aesthetic design choices, but define proper markup with extensible styling for common typographic patterns. A stripped-down Sass library concerned with the appropriate technical implementation of design patterns—not how they look. http://typeplate.com

    • 390 Stars
    • 55 Forks
  64. malarkey/Rock-Hammer

    A curated project library for Hammer For Mac. Rock Hammer contains baseline typography, plus styling for common HTML elements including images, forms and tables, as well as navigation, responsive modules and widgets https://github.com/malarkey/Rock-Hammer

    • 509 Stars
    • 70 Forks
  65. mourner/dead-simple-grid

    Dead Simple Grid is a responsive CSS grid micro framework that is just that. Dead simple. http://mourner.github.com/dead-simple-grid

    • 398 Stars
    • 51 Forks
    • 349 Stars
    • 53 Forks
  66. jenius/rupture

    Simple media queries in stylus http://jenius.github.io/rupture

    • 376 Stars
    • 24 Forks
  67. raphaelgoetter/KNACSS

    feuille de styles CSS sur-vitaminée http://www.knacss.com

    • 264 Stars
    • 62 Forks
  68. TryKickoff/kickoff

    A lightweight front-end framework for creating scalable, responsive sites http://trykickoff.github.io/

    • 293 Stars
    • 48 Forks
  69. cburgmer/csscritic

    A lightweight tool for regression testing of Cascading Style Sheets http://cburgmer.github.io/csscritic

    • 312 Stars
    • 15 Forks
  70. andytlr/cssgrid

    The 1140px CSS Grid, fluid to mobile. http://cssgrid.net

    • 331 Stars
    • 164 Forks
  71. yahoo/debugCSS

    CSS to highlight potentially malformed, invalid or questionable markup. http://yahoo.github.com/debugCSS/

    • 571 Stars
    • 27 Forks
  72. jenius/axis

    terse, modular & powerful css library http://axis.netlify.com

    • 240 Stars
    • 37 Forks
    • 501 Stars
    • 41 Forks
  73. newaeonweb/responsiveboilerplate

    A lightweight (2kb) micro-library, elegant & minimalistic CSS3 grid system, made with only three main classes and 12 columns. It`s very easy to use and understand, pre-packed with some extra css helpers for mobile devices. http://www.responsiveboilerplate.com

    • 232 Stars
    • 59 Forks
  74. chris-pearce/scally

    Scally is a Sass-based, BEM, OOCSS, responsive-ready, CSS framework that provides you with a solid foundation for building reusable UI's quickly https://twitter.com/scally_fw

    • 232 Stars
    • 18 Forks
    • 415 Stars
    • 44 Forks
  75. kaelig/hidpi

    Serve high resolution graphics to high density (Retina-like) displays with Sass. http://www.kaelig.fr/hidpi/examples/

    • 247 Stars
    • 12 Forks
  76. justinhough/Centurion

    Centurion is a web-based framework for rapid prototyping and building larger web projects. http://www.centurionframework.com

    • 319 Stars
    • 68 Forks
  77. weepower/wee

    Blueprint for modern web development https://www.weepower.com

    • 200 Stars
    • 9 Forks
  78. JohnAlbin/zen-grids

    A Compass plugin for Zen Grids, a fluid responsive grid system http://next.zengrids.com

    • 233 Stars
    • 42 Forks
    • 169 Stars
    • 15 Forks
  79. kanthvallampati/IVORY

    Simple, Flexible, & Powerful responsive web framework, Makes your web development faster and easier. It takes you all the way from 1200px on down to 320px. http://weice.in/ivory/

    • 205 Stars
    • 40 Forks
  80. csswizardry/beautons

    A beautifully simple button toolkit http://csswizardry.com/beautons

    • 204 Stars
    • 23 Forks
    • 146 Stars
    • 20 Forks
    • 113 Stars
    • 8 Forks
  81. tzi/chewing-grid.css

    A CSS Grid ideal for card listing design like tiles, videos or articles listing. Responsive without media-queries. http://tzi.github.io/chewing-grid.css

    • 82 Stars
    • 9 Forks
  82. rowanmanning/pigeon

    Pigeon is an OOCSS framework for rapid prototyping and building smart, scalable websites. http://pigeoncss.com/

    • 149 Stars
    • 7 Forks
  83. atomicpages/skeleton-sass

    Skeleton Sass is a highly modularized version of Skeleton CSS [written in Sass] http://atomicpages.github.io/skeleton-sass/

    • 63 Stars
    • 16 Forks
  84. devatrox/Sunglass

    A mixin and functions library for Sass http://devatrox.github.io/Sunglass/

    • 110 Stars
    • 8 Forks
  85. Robdel12/Thumper

    Simple Infinite responsive grid system built to work in any web application, CMS, or blog. https://github.com/Robdel12/Thumper

    • 50 Stars
    • 9 Forks
  86. djesse/yaml4-sass

    Sass port of CSS framework YAML http://www.yaml.de

    • 56 Stars
    • 13 Forks
  87. rowanmanning/cssdb

    CSSDB: A curated collection of great CSS, Sass, LESS and Stylus libraries. http://cssdb.co/

    • 32 Stars
    • 5 Forks
  88. chrishumboldt/Blueplate

    A lightweight SASS mixin library and responsive CSS layout engine. https://github.com/chrishumboldt/Blueplate

    • 33 Stars
    • 4 Forks
  89. Kilian/sencss

    The sensible standards CSS baseline http://sencss.kilianvalkhof.com/

    • 54 Stars
    • 5 Forks
    • 30 Stars
    • 8 Forks
  90. tsi/Salsa

    Syntactically Awesome Layout System... Awesome! http://tsi.github.com/Salsa/

    • 46 Stars
    • 3 Forks
  91. dreyacosta/xpressio

    Small and Fast RWD front-end framework http://xpress.io

    • 30 Stars
    • 9 Forks
  92. Darklg/CSSCommon

    Simple Modular CSS Framework http://csscommon.com

    • 41 Stars
    • 4 Forks
  93. paranoida/simple-ui

    Simple UI is a set of the most popular components used in many web applications. http://paranoida.github.com/simple-ui/

    • 39 Stars
    • 3 Forks
  94. srsgores/sass-boilerplate

    Starting template for creating new html5 websites using SASS and Compass https://github.com/srsgores/sass-boilerplate

    • 35 Stars
    • 5 Forks
  95. nico3333fr/ROCSSTI

    RÖCSSTI : pour démarrer vos CSS avec la patate ! http://rocssti.net/

    • 32 Stars
    • 5 Forks
  96. lmc-eu/emerald

    Emerald is a pragmatic responsive grid system in LESS http://lmc-eu.github.io/emerald/

    • 31 Stars
    • 4 Forks
  97. mrrocks/simpletastic

    Simplestastic is a super lightweight framework written in SASS that makes it super easy create to fluid grids. https://github.com/mrrocks/simpletastic

    • 33 Stars
    • 3 Forks
  98. rowanmanning/frag

    Frag is a fluid, responsive, simple grid system for CSS written in Sass. http://fragcss.com/

    • 26 Stars
    • 3 Forks
  99. tinywall/scrollzip

    jQuery plugin to trigger action if element is visible while scrolling http://demo.tinywall.net/scrollzip/

    • 18 Stars
    • 5 Forks
  100. sebnitu/BaseWeb

    A fresh front-end bootstrap framework. https://github.com/sebnitu/BaseWeb

    • 15 Stars
    • 4 Forks
  101. Snugug/toolkit

    Toolkit for Responsive Web Design and Progressive Enhancement with Compass https://github.com/Snugug/toolkit

    • 10 Stars
    • 2 Forks
    • 5 Stars
    • 1 Forks
  102. perryharlock/my-bootstrap

    All you need to build a simple static web site https://github.com/perryharlock/my-bootstrap

    • 7 Stars
    • 2 Forks
  103. ride-css/ride-css

    A stylus mixins library for a faster css development. http://ridecss.com

    • 8 Stars
    • 1 Forks
  104. juanghurtado/flaminwork

    Front-end framework (XHTML/CSS/Javascript) http://flaminwork.com/

    • 6 Stars
    • 2 Forks
  105. joshuakim/jQuery-Mobile-Theme-SASS

    Theme jQuery Mobile with SASS and Compass. Easily create new swatches with custom names https://github.com/joshuakim/jQuery-Mobile-Theme-SASS

    • 2 Stars
    • 2 Forks
  106. tiko2015/snippets

    framework css escalable basado en less https://github.com/tiko2015/snippets

    • 4 Stars
    • 0 Forks
  107. rowanmanning/catchup

    [UNMAINTAINED] Catchup is a small set of CSS3 and CSS 2.1 compatibility mixins for LESS. https://github.com/rowanmanning/catchup

    • 1 Stars
    • 1 Forks
  108. seelva/seelva

    Seelva is a CSS and HTML Framework built with SASS and Compass. http://seelva.com/

    • 2 Stars
    • 1 Forks
  109. kurbmedia/facades

    Mixins, utilities, and helpers for front-end design/development with Compass / Rails http://kurbmedia.github.com/facades/

    • 3 Stars
    • 0 Forks
  110. rowanmanning/rem

    Rem is a simple mixin for Sass which converts pixel values to rem values with a pixel fallback. https://github.com/rowanmanning/rem

    • 2 Stars
    • 0 Forks
  111. banquito/naranju

    Sistema integral de desarrollo frontend https://github.com/banquito/naranju

    • 0 Stars
    • 0 Forks
    • 1 Stars
    • 0 Forks
  112. MikeBallan/Amazium

    The responsive CSS web framework http://www.amazium.co.uk

    • 0 Stars
    • 0 Forks
  113. Darklg/CSSNormalize

    CSSNormalize s'appelle désormais CSSCommon ! https://github.com/Darklg/CSSNormalize

    • 0 Stars
    • 0 Forks
  114. MarkehMe/pure-sass

    Up to date version of Pure Sass generated from Sassinate Pure https://github.com/MarkehMe/pure-sass

    • 1 Stars
    • 0 Forks