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

   •  116K Stars
   •  54K Forks

2. FortAwesome/Font-Awesome

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

   •  52K Stars
   •  9.3K 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

   •  45K Stars
   •  10K Forks

4. ionic-team/ionic

   Build amazing native and progressive web apps with open web technologies. One app running on everything 🎉 https://ionicframework.com/

   •  31K Stars
   •  9.1K Forks

5. Semantic-Org/Semantic-UI

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

   •  37K Stars
   •  4.1K Forks

6. callemall/material-ui

   React Components that Implement Google's Material Design. http://www.material-ui.com

   •  29K Stars
   •  5.4K Forks

7. necolas/normalize.css

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

   •  28K Stars
   •  5.8K Forks

8. zurb/foundation-sites

   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

   •  26K Stars
   •  5.7K Forks

9. Dogfalo/materialize

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

   •  29K Stars
   •  4.2K Forks

10. jgthms/bulma

    Modern CSS framework based on Flexbox https://bulma.io

    •  20K Stars
    •  1.5K Forks

11. yahoo/pure

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

    •  17K Stars
    •  1.9K Forks

12. dhg/Skeleton

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

    •  14K Stars
    •  2.6K Forks

13. 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. https://designmodo.com/flat-free/

    •  13K Stars
    •  2.4K Forks

14. twbs/ratchet

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

    •  14K Stars
    •  1.5K Forks

15. thomaspark/bootswatch

    Themes for Bootstrap https://bootswatch.com

    •  9.5K Stars
    •  2.7K Forks

16. uikit/uikit

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

    •  10K Stars
    •  1.8K Forks

17. h5bp/Effeckt.css

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

    •  11K Stars
    •  1.5K Forks

18. thoughtbot/bourbon

    A Lightweight Sass Tool Set http://bourbon.io

    •  8.3K Stars
    •  919 Forks

19. Compass/compass

    Compass is no longer actively maintained. Compass is a Stylesheet Authoring Environment that makes your website design simpler to implement and easier to maintain. http://compass-style.org

    •  6.9K Stars
    •  1.2K Forks

20. chinchang/hint.css

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

    •  7.5K Stars
    •  725 Forks

21. olton/Metro-UI-CSS

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

    •  5.4K Stars
    •  1.8K Forks

22. stubbornella/oocss

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

    •  5.7K Stars
    •  732 Forks

23. alexwolfe/Buttons

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

    •  5.1K Stars
    •  896 Forks

24. joshuaclayton/blueprint-css

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

    •  5.5K Stars
    •  635 Forks

25. yui/yui3

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

    •  3.7K Stars
    •  1.3K Forks

26. Huddle/PhantomCSS

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

    •  4.6K Stars
    •  258 Forks

27. csswizardry/inuit.css

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

    •  4.0K Stars
    •  497 Forks

28. topcoat/topcoat

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

    •  4.3K Stars
    •  420 Forks

29. oddbird/susy

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

    •  3.8K Stars
    •  368 Forks

30. nathansmith/960-Grid-System

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

    •  3.3K Stars
    •  544 Forks

31. GumbyFramework/Gumby

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

    •  3.0K Stars
    •  504 Forks

32. suitcss/suit

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

    •  3.3K Stars
    •  186 Forks

33. mojotech/jeet

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

    •  3.0K Stars
    •  289 Forks

34. hakimel/Meny

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

    •  2.3K Stars
    •  492 Forks

35. madebysource/lesshat

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

    •  2.2K Stars
    •  304 Forks

36. zmoazeni/csscss

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

    •  2.9K Stars
    •  150 Forks

37. daneden/Toast

    🍞 A highly-customizable, responsive (S)CSS grid http://daneden.github.io/Toast

    •  1.8K Stars
    •  304 Forks

38. jalxob/cool-kitten

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

    •  1.5K Stars
    •  524 Forks

39. sapo/Ink

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

    •  1.9K Stars
    •  285 Forks

40. groundworkcss/groundwork

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

    •  1.7K Stars
    •  344 Forks

41. yairEO/fancyInput

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

    •  1.9K Stars
    •  309 Forks

42. tylertate/semantic.gs

    The Semantic CSS Grid http://tylertate.github.io/semantic.gs/

    •  1.7K Stars
    •  296 Forks

43. tj/nib

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

    •  1.8K Stars
    •  243 Forks

44. mdo/preboot

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

    •  1.7K Stars
    •  187 Forks

45. at-import/breakpoint

    Really simple media queries in Sass https://github.com/at-import/breakpoint

    •  2.0K Stars
    •  137 Forks

46. joshuagatcke/HTML-KickStart

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

    •  1.2K Stars
    •  249 Forks

47. paranoida/sass-mediaqueries

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

    •  1.2K Stars
    •  165 Forks

48. imperavi/kube

    Kube CSS Framework https://github.com/imperavi/kube

    •  1.2K Stars
    •  198 Forks

49. csswizardry/csswizardry-grids

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

    •  1.4K Stars
    •  204 Forks

50. nathansmith/unsemantic

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

    •  1.3K Stars
    •  165 Forks

51. richleland/pygments-css

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

    •  833 Stars
    •  314 Forks

52. jescalan/roots

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

    •  1.5K Stars
    •  134 Forks

53. jakegiltsoff/sassline

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

    •  1.3K Stars
    •  96 Forks

54. BlazeCSS/blaze

    Open Source CSS Toolkit http://blazecss.com

    •  1.2K Stars
    •  116 Forks

55. nathansmith/formalize

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

    •  1.3K Stars
    •  133 Forks

56. artofrawr/profoundgrid

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

    •  1.0K Stars
    •  178 Forks

57. matthewhartman/base

    Base - A Rock Solid, Responsive CSS Framework built to work on all devices big, small and in-between. http://getbase.org

    •  995 Stars
    •  119 Forks

58. fffunction/sassaparilla

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

    •  1.0K Stars
    •  174 Forks

59. igoradamenko/awsm.css

    Simple CSS library for semantic HTML markup https://igoradamenko.github.io/awsm.css/

    •  881 Stars
    •  50 Forks

60. 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

    •  743 Stars
    •  103 Forks

61. heygrady/scss-blend-modes

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

    •  818 Stars
    •  127 Forks

62. jonikorpi/Frameless

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

    •  1.2K Stars
    •  246 Forks

63. IcaliaLabs/furatto

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

    •  860 Stars
    •  128 Forks

64. jescalan/rupture

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

    •  688 Stars
    •  45 Forks

65. gillesbertaux/andy

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

    •  578 Stars
    •  77 Forks

66. 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

    •  628 Stars
    •  62 Forks

67. soyjavi/tuktuk

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

    •  569 Stars
    •  121 Forks

68. ghinda/css-toggle-switch

    Accessible, CSS-only, toggle switches http://ghinda.net/css-toggle-switch/

    •  592 Stars
    •  76 Forks

69. 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

    •  547 Stars
    •  72 Forks

70. csscomb/csscomb

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

    •  646 Stars
    •  48 Forks

71. maxmert/maxmertkit

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

    •  513 Stars
    •  84 Forks

72. Wolfr/clank

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

    •  934 Stars
    •  88 Forks

73. 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

    •  515 Stars
    •  74 Forks

74. alsacreations/KNACSS

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

    •  408 Stars
    •  97 Forks

75. justinhough/Centurion

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

    •  329 Stars
    •  64 Forks

76. static-dev/axis

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

    •  324 Stars
    •  46 Forks

77. jslegers/cascadeframework

    Cascade Framework https://github.com/jslegers/cascadeframework

    •  257 Stars
    •  53 Forks

78. eliortabeka/tootik

    A pure CSS/SCSS/LESS Tooltips library. Super easy to use, No JavaScript required. https://eliortabeka.github.io/tootik/

    •  452 Stars
    •  90 Forks

79. 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

    •  294 Stars
    •  22 Forks

80. 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

    •  258 Stars
    •  63 Forks

81. andytlr/cssgrid

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

    •  329 Stars
    •  147 Forks

82. cmaddux/littlebox

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

    •  559 Stars
    •  31 Forks

83. cburgmer/csscritic

    Lightweight CSS regression testing http://cburgmer.github.io/csscritic

    •  408 Stars
    •  16 Forks

84. clearleft/clearless

    A collection of reusable LESS mixins http://clearleft.github.com/clearless/

    •  498 Stars
    •  38 Forks

85. TryKickoff/kickoff

    :basketball: A lightweight front-end framework for creating scalable, responsive sites. Version 8 has just been released! http://trykickoff.com

    •  427 Stars
    •  61 Forks

86. robertpiira/ingrid

    A fluid CSS layout system http://piira.se/projects/ingrid

    •  417 Stars
    •  44 Forks

87. csswizardry/beautons

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

    •  211 Stars
    •  21 Forks

88. 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. https://github.com/kanthvallampati/IVORY

    •  199 Stars
    •  43 Forks

89. kaelig/hidpi

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

    •  260 Stars
    •  11 Forks

90. weepower/wee

    Front-end framework https://www.weepower.com

    •  334 Stars
    •  23 Forks

91. sturobson/Sassifaction

    A Sass mixin library https://github.com/sturobson/Sassifaction

    •  178 Stars
    •  14 Forks

92. JohnAlbin/zen-grids

    A Sass module to build responsive grid systems http://zengrids.com

    •  247 Stars
    •  38 Forks

93. at-import/SassyLists

    https://github.com/at-import/SassyLists

    •  263 Stars
    •  25 Forks

94. atomicpages/skeleton-sass

    Skeleton Sass is a highly modular version of Skeleton CSS https://atomicpages.github.io/skeleton-sass/

    •  120 Stars
    •  29 Forks

95. 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

    •  176 Stars
    •  27 Forks

96. devatrox/Sunglass

    A mixin and functions library for Sass https://github.com/devatrox/Sunglass

    •  125 Stars
    •  11 Forks

97. slavanga/baseguide

    Lightweight and robust CSS framework for prototyping and production code. http://basegui.de

    •  84 Stars
    •  12 Forks

98. radogado/natuive

    ~15 KB feature-rich front-end framework http://radogado.github.io/natuive/

    •  82 Stars
    •  15 Forks

99. mateuszkocz/3l

    Lots of Love for LESS https://github.com/mateuszkocz/3l

    •  148 Stars
    •  22 Forks

100. rowanmanning/pigeon

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

     •  147 Stars
     •  6 Forks

101. voronianski/dookie-css

     stylus driven css library http://labs.voronianski.com/dookie-css/

     •  117 Stars
     •  7 Forks

102. djesse/yaml4-sass

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

     •  49 Stars
     •  12 Forks

103. Darklg/CSSCommon

     Simple Modular CSS Framework http://csscommon.com

     •  48 Stars
     •  4 Forks

104. lmc-eu/emerald

     Emerald is an opinionated responsive grid system written in LESS http://lmc-eu.github.io/emerald/

     •  39 Stars
     •  3 Forks

105. rowanmanning/cssdb

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

     •  50 Stars
     •  10 Forks

106. Robdel12/Thumper

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

     •  49 Stars
     •  10 Forks

107. srsgores/sass-boilerplate

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

     •  42 Stars
     •  12 Forks

108. Kilian/sencss

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

     •  52 Stars
     •  4 Forks

109. paranoida/simple-ui

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

     •  45 Stars
     •  7 Forks

110. tsi/Salsa

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

     •  49 Stars
     •  3 Forks

111. nico3333fr/ROCSSTI

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

     •  45 Stars
     •  5 Forks

112. dreyacosta/xpressio

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

     •  31 Stars
     •  10 Forks

113. chrishumboldt/Rocket-Propel

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

     •  43 Stars
     •  4 Forks

114. bozboz/luigi

     Bozboz Scss Framework https://github.com/bozboz/luigi

     •  34 Stars
     •  7 Forks

115. bantikyan/icheck-bootstrap

     Pure css checkboxes and radio buttons for Twitter Bootstrap. https://github.com/bantikyan/icheck-bootstrap

     •  13 Stars
     •  4 Forks

116. sebnitu/BaseWeb

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

     •  25 Stars
     •  6 Forks

117. 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
     •  2 Forks

118. amelierosser/stylus-platonic

     Pure CSS3D library. http://davidpaulrosser.github.io/stylus-platonic

     •  30 Stars
     •  3 Forks

119. rowanmanning/frag

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

     •  27 Stars
     •  3 Forks

120. jslegers/cascadeframeworklight

     Cascade Framework Light https://github.com/jslegers/cascadeframeworklight

     •  20 Stars
     •  5 Forks

121. tinywall/scrollzip

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

     •  19 Stars
     •  5 Forks

122. ride-css/ride-css

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

     •  21 Stars
     •  3 Forks

123. groenroos/bulma-stylus

     A Stylus translation of a modern CSS framework based on Flexbox https://github.com/groenroos/bulma-stylus

     •  15 Stars
     •  2 Forks

124. perryharlock/my-bootstrap

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

     •  6 Stars
     •  3 Forks

125. Snugug/toolkit

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

     •  9 Stars
     •  1 Forks

126. chrishumboldt/Rocket-Button

     A lightweight, universal button module. https://github.com/chrishumboldt/Rocket-Button

     •  7 Stars
     •  2 Forks

127. afropolymath/flexgrid

     Flexbox CSS Layout System https://github.com/afropolymath/flexgrid

     •  7 Stars
     •  2 Forks

128. MarkehMe/pure-sass

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

     •  4 Stars
     •  2 Forks

129. juanghurtado/flaminwork

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

     •  7 Stars
     •  1 Forks

130. seelva/seelva

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

     •  2 Stars
     •  2 Forks

131. 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

132. tiko2015/snippets

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

     •  4 Stars
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