Bourbon is a set of Sass mixins using SCSS syntax
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Bourbon Sass Mixin Library

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A simple and lightweight mixin library for Sass.

Bourbon is a library of pure Sass mixins that are designed to be simple and easy to use. No configuration required. The mixins aim to be as vanilla as possible, meaning they should be as close to the original CSS syntax as possible.

The mixins contain vendor specific prefixes for all CSS3 properties for support amongst modern browsers. The prefixes also ensure graceful degradation for older browsers that support only CSS3 prefixed properties. Bourbon uses SCSS syntax.


  • Sass 3.3+
  • ⚠️ If you are using Bourbon with LibSass, sass-rails, Compass (pre 1.0.0), Foundation or need Sass 3.2 support, you should use Bourbon 3.2.x.


Bourbon is distributed using the RubyGems package manager, which allows you to easily generate a bourbon directory with all of the necessary files right into your project. Alternatively, you can install Bourbon with Bower.

For command line help, visit our wiki page on Bourbon’s command line interface.

  1. Install the Bourbon gem:
gem install bourbon
  1. Install the Bourbon library into the current directory:
bourbon install

Pro Tip: You can target installation into a specific directory using the path flag:

bourbon install --path my/custom/path/
  1. Import Bourbon at the beginning of your stylesheet:
@import "bourbon/bourbon";

It’s not recommended to add or modify the Bourbon files so that you can update them easily.

Installation for Ruby on Rails 3.1+

  1. Add Bourbon to your Gemfile:
gem 'bourbon'
  1. Then run:
bundle install
  1. Restart your server and rename application.css to application.css.scss:
mv app/assets/stylesheets/application.css app/assets/stylesheets/application.css.scss
  1. Delete the sprocket directive in application.css.scss (why?):
*= require_tree .
  1. Import Bourbon at the beginning of application.css.scss. All additional stylesheets should be imported below Bourbon:
@import "bourbon";
@import "home";
@import "users";

Help! I’m getting an undefined mixin error.

Installing older versions of Bourbon

  1. Uninstall any Bourbon gem versions you already have:
gem uninstall bourbon
  1. Reinstall the Bourbon gem, using the -v flag to specify the version you need:
gem install bourbon -v 3.2.3
  1. Follow the instructions above to install Bourbon into your project.

Browser support

  • Chrome 10.0+
  • Firefox 3.6+
  • Internet Explorer 9+
  • Opera 12+
  • Safari 5.1+

The Bourbon family

  • Bourbon: A simple and lightweight mixin library for Sass
  • Neat: A lightweight semantic grid framework for Sass and Bourbon
  • Bitters: Scaffold styles, variables and structure for Bourbon projects
  • Refills: Prepackaged patterns and components built with Bourbon, Neat and Bitters



Bourbon is maintained and funded by thoughtbot, inc. Tweet your questions or suggestions to @bourbonsass and while you’re at it follow us too.


Copyright © 2011–2014 thoughtbot, inc. Bourbon is free software, and may be redistributed under the terms specified in the license.