extend.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>Extend · Bootstrap</title>
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta name="description" content="">
<meta name="author" content="">
<!-- Le styles -->
<link href="assets/css/bootstrap.css" rel="stylesheet">
<link href="assets/css/bootstrap-responsive.css" rel="stylesheet">
<link href="assets/css/docs.css" rel="stylesheet">
<link href="assets/js/google-code-prettify/prettify.css" rel="stylesheet">
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</head>
<body data-spy="scroll" data-target=".bs-docs-sidebar">
<!-- Navbar
================================================== -->
<div class="navbar navbar-inverse navbar-fixed-top">
<div class="navbar-inner">
<div class="container">
<button type="button" class="btn btn-navbar" data-toggle="collapse" data-target=".nav-collapse">
<span class="icon-bar"></span>
<span class="icon-bar"></span>
<span class="icon-bar"></span>
</button>
<a class="brand" href="./index.html">Bootstrap</a>
<div class="nav-collapse collapse">
<ul class="nav">
<li class="">
<a href="./index.html">Home</a>
</li>
<li class="">
<a href="./getting-started.html">Get started</a>
</li>
<li class="">
<a href="./scaffolding.html">Scaffolding</a>
</li>
<li class="">
<a href="./base-css.html">Base CSS</a>
</li>
<li class="">
<a href="./components.html">Components</a>
</li>
<li class="">
<a href="./javascript.html">JavaScript</a>
</li>
<li class="">
<a href="./customize.html">Customize</a>
</li>
</ul>
</div>
</div>
</div>
</div>
<!-- Subhead
================================================== -->
<header class="jumbotron subhead" id="overview">
<div class="container">
<h1>Extending Bootstrap</h1>
<p class="lead">Extend Bootstrap to take advantage of included styles and components, as well as LESS variables and mixins.</p>
<div>
</header>
<div class="container">
<!-- Docs nav
================================================== -->
<div class="row">
<div class="span3 bs-docs-sidebar">
<ul class="nav nav-list bs-docs-sidenav">
<li><a href="#built-with-less"><i class="icon-chevron-right"></i> Built with LESS</a></li>
<li><a href="#compiling"><i class="icon-chevron-right"></i> Compiling Bootstrap</a></li>
<li><a href="#static-assets"><i class="icon-chevron-right"></i> Use as static assets</a></li>
</ul>
</div>
<div class="span9">
<!-- BUILT WITH LESS
================================================== -->
<section id="built-with-less">
<div class="page-header">
<h1>Built with LESS</h1>
</div>
<img style="float: right; height: 36px; margin: 10px 20px 20px" src="assets/img/less-logo-large.png" alt="LESS CSS">
<p class="lead">Bootstrap is made with LESS at its core, a dynamic stylesheet language created by our good friend, <a href="http://cloudhead.io">Alexis Sellier</a>. It makes developing systems-based CSS faster, easier, and more fun.</p>
<h3>Why LESS?</h3>
<p>One of Bootstrap's creators wrote a quick <a href="http://www.wordsbyf.at/2012/03/08/why-less/">blog post about this</a>, summarized here:</p>
<ul>
<li>Bootstrap compiles faster ~6x faster with Less compared to Sass</li>
<li>Less is written in JavaScript, making it easier to us to dive in and patch compared to Ruby with Sass.</li>
<li>Less is more; we want to feel like we're writing CSS and making Bootstrap approachable to all.</li>
</ul>
<h3>What's included?</h3>
<p>As an extension of CSS, LESS includes variables, mixins for reusable snippets of code, operations for simple math, nesting, and even color functions.</p>
<h3>Learn more</h3>
<p>Visit the official website at <a href="http://lesscss.org">http://lesscss.org</a> to learn more.</p>
</section>
<!-- COMPILING LESS AND BOOTSTRAP
================================================== -->
<section id="compiling">
<div class="page-header">
<h1>Compiling Bootstrap with Less</h1>
</div>
<p class="lead">Since our CSS is written with Less and utilizes variables and mixins, it needs to be compiled for final production implementation. Here's how.</p>
<div class="alert alert-info">
<strong>Note:</strong> If you're submitting a pull request to GitHub with modified CSS, you <strong>must</strong> recompile the CSS via any of these methods.
</div>
<h2>Tools for compiling</h2>
<h3>Command line</h3>
<p>Follow <a href="https://github.com/twitter/bootstrap#developers">the instructions in the project readme</a> on GitHub for compiling via command line.</p>
<h3>JavaScript</h3>
<p><a href="http://lesscss.org/">Download the latest Less.js</a> and include the path to it (and Bootstrap) in the <code><head></code>.</p>
<pre class="prettyprint">
<link rel="stylesheet/less" href="/path/to/bootstrap.less">
<script src="/path/to/less.js"></script>
</pre>
<p>To recompile the .less files, just save them and reload your page. Less.js compiles them and stores them in local storage.</p>
<h3>Unofficial Mac app</h3>
<p><a href="http://incident57.com/less/">The unofficial Mac app</a> watches directories of .less files and compiles the code to local files after every save of a watched .less file. If you like, you can toggle preferences in the app for automatic minifying and which directory the compiled files end up in.</p>
<h3>More apps</h3>
<h4><a href="http://crunchapp.net/" target="_blank">Crunch</a></h4>
<p>Crunch is a great looking LESS editor and compiler built on Adobe Air.</p>
<h4><a href="http://incident57.com/codekit/" target="_blank">CodeKit</a></h4>
<p>Created by the same guy as the unofficial Mac app, CodeKit is a Mac app that compiles LESS, SASS, Stylus, and CoffeeScript.</p>
<h4><a href="http://wearekiss.com/simpless" target="_blank">Simpless</a></h4>
<p>Mac, Linux, and Windows app for drag and drop compiling of LESS files. Plus, the <a href="https://github.com/Paratron/SimpLESS" target="_blank">source code is on GitHub</a>.</p>
</section>
<!-- Static assets
================================================== -->
<section id="static-assets">
<div class="page-header">
<h1>Use as static assets</h1>
</div>
<p class="lead"><a href="./getting-started.html">Quickly start</a> any web project by dropping in the compiled or minified CSS and JS. Layer on custom styles separately for easy upgrades and maintenance moving forward.</p>
<h3>Setup file structure</h3>
<p>Download the latest compiled Bootstrap and place into your project. For example, you might have something like this:</p>
<pre>
<span class="icon-folder-open"></span> app/
<span class="icon-folder-open"></span> layouts/
<span class="icon-folder-open"></span> templates/
<span class="icon-folder-open"></span> public/
<span class="icon-folder-open"></span> css/
<span class="icon-file"></span> bootstrap.min.css
<span class="icon-folder-open"></span> js/
<span class="icon-file"></span> bootstrap.min.js
<span class="icon-folder-open"></span> img/
<span class="icon-file"></span> glyphicons-halflings.png
<span class="icon-file"></span> glyphicons-halflings-white.png
</pre>
<h3>Utilize starter template</h3>
<p>Copy the following base HTML to get started.</p>
<pre class="prettyprint linenums">
<html>
<head>
<title>Bootstrap 101 Template</title>
<!-- Bootstrap -->
<link href="public/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
<h1>Hello, world!</h1>
<!-- Bootstrap -->
<script src="public/js/bootstrap.min.js"></script>
</body>
</html>
</pre>
<h3>Layer on custom code</h3>
<p>Work in your custom CSS, JS, and more as necessary to make Bootstrap your own with your own separate CSS and JS files.</p>
<pre class="prettyprint linenums">
<html>
<head>
<title>Bootstrap 101 Template</title>
<!-- Bootstrap -->
<link href="public/css/bootstrap.min.css" rel="stylesheet">
<!-- Project -->
<link href="public/css/application.css" rel="stylesheet">
</head>
<body>
<h1>Hello, world!</h1>
<!-- Bootstrap -->
<script src="public/js/bootstrap.min.js"></script>
<!-- Project -->
<script src="public/js/application.js"></script>
</body>
</html>
</pre>
</section>
</div>
</div>
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<p>Code licensed under <a href="http://www.apache.org/licenses/LICENSE-2.0" target="_blank">Apache License v2.0</a>, documentation under <a href="http://creativecommons.org/licenses/by/3.0/">CC BY 3.0</a>.</p>
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</body>
</html>