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Bootstrap/2.0.0/scaffolding.html
2015-06-16 14:22:15 -07:00

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<a class="brand" href="./index.html">Bootstrap</a>
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<ul class="nav">
<li class="">
<a href="./index.html">Overview</a>
</li>
<li class="active">
<a href="./scaffolding.html">Scaffolding</a>
</li>
<li class="">
<a href="./base-css.html">Base CSS</a>
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<a href="./components.html">Components</a>
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<header class="jumbotron subhead" id="overview">
<h1>Scaffolding</h1>
<p class="lead">Bootstrap is built on a responsive 12-column grid. We've also included fixed- and fluid-width layouts based on that system.</p>
<div class="subnav">
<ul class="nav nav-pills">
<li><a href="#grid-system">Grid system</a></li>
<li><a href="#layouts">Layouts</a></li>
<li><a href="#responsive">Responsive design</a></li>
</ul>
</div>
</header>
<!-- Grid system
================================================== -->
<section id="grid-system">
<div class="page-header">
<h1>Grid system <small>12 columns with a responsive twist</small></h1>
</div>
<h2>Default 940px grid</h2>
<div class="row show-grid">
<div class="span1">1</div>
<div class="span1">1</div>
<div class="span1">1</div>
<div class="span1">1</div>
<div class="span1">1</div>
<div class="span1">1</div>
<div class="span1">1</div>
<div class="span1">1</div>
<div class="span1">1</div>
<div class="span1">1</div>
<div class="span1">1</div>
<div class="span1">1</div>
</div>
<div class="row show-grid">
<div class="span4">4</div>
<div class="span4">4</div>
<div class="span4">4</div>
</div>
<div class="row show-grid">
<div class="span4">4</div>
<div class="span8">8</div>
</div>
<div class="row show-grid">
<div class="span6">6</div>
<div class="span6">6</div>
</div>
<div class="row show-grid">
<div class="span12">12</div>
</div>
<div class="row">
<div class="span4">
<p>The default grid system provided as part of Bootstrap is a <strong>940px-wide, 12-column grid</strong>.</p>
<p>It also has four responsive variations for various devices and resolutions: phone, tablet portrait, table landscape and small desktops, and large widescreen desktops.</p>
</div>
<div class="span4">
<pre class="prettyprint linenums">
&lt;div class="row"&gt;
&lt;div class="span4"&gt;...&lt;/div&gt;
&lt;div class="span8"&gt;...&lt;/div&gt;
&lt;/div&gt;
</pre>
</div>
<div class="span4">
<p>As shown here, a basic layout can be created with two "columns," each spanning a number of the 12 foundational columns we defined as part of our grid system.</p>
</div>
</div><!-- /row -->
<br>
<h2>Offsetting columns</h2>
<div class="row show-grid">
<div class="span4">4</div>
<div class="span4 offset4">4 offset 4</div>
</div><!-- /row -->
<div class="row show-grid">
<div class="span3 offset3">3 offset 3</div>
<div class="span3 offset3">3 offset 3</div>
</div><!-- /row -->
<div class="row show-grid">
<div class="span8 offset4">8 offset 4</div>
</div><!-- /row -->
<pre class="prettyprint linenums">
&lt;div class="row"&gt;
&lt;div class="span4"&gt;...&lt;/div&gt;
&lt;div class="span4 offset4"&gt;...&lt;/div&gt;
&lt;/div&gt;
</pre>
<br>
<h2>Nesting columns</h2>
<div class="row">
<div class="span6">
<p>With the static (non-fluid) grid system in Bootstrap, nesting is easy. To nest your content, just add a new <code>.row</code> and set of <code>.span*</code> columns within an existing <code>.span*</code> column.</p>
<h4>Example</h4>
<div class="row show-grid">
<div class="span6">
Level 1 of column
<div class="row show-grid">
<div class="span3">
Level 2
</div>
<div class="span3">
Level 2
</div>
</div>
</div>
</div>
</div>
<div class="span6">
<pre class="prettyprint linenums">
&lt;div class="row"&gt;
&lt;div class="span12"&gt;
Level 1 of column
&lt;div class="row"&gt;
&lt;div class="span6"&gt;Level 2&lt;/div&gt;
&lt;div class="span6"&gt;Level 2&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;
</pre>
</div>
</div>
<h2>Grid customization</h2>
<table class="table table-bordered table-striped">
<thead>
<tr>
<th>Variable</th>
<th>Default value</th>
<th>Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>@gridColumns</code></td>
<td>12</td>
<td>Number of columns</td>
</tr>
<tr>
<td><code>@gridColumnWidth</code></td>
<td>60px</td>
<td>Width of each column</td>
</tr>
<tr>
<td><code>@gridGutterWidth</code></td>
<td>20px</td>
<td>Negative space between columns</td>
</tr>
<tr>
<td><code>@siteWidth</code></td>
<td><em>Computed sum of all columns and gutters</em></td>
<td>Counts number of columns and gutters to set width of the <code>.container-fixed()</code> mixin</td>
</tr>
</tbody>
</table>
<div class="row">
<div class="span4">
<h3>Variables in LESS</h3>
<p>Built into Bootstrap are a handful of variables for customizing the default 940px grid system, documented above. All variables for the grid are stored in variables.less.</p>
</div>
<div class="span4">
<h3>How to customize</h3>
<p>Modifying the grid means changing the three <code>@grid*</code> variables and recompiling Bootstrap. Change the grid variables in variables.less and use one of the <a href="#compiling">four ways documented to recompile</a>. If you're adding more columns, be sure to add the CSS for those in grid.less.</p>
</div>
<div class="span4">
<h3>Staying responsive</h3>
<p>Customization of the grid only works at the default level, the 940px grid. To maintain the responsive aspects of Bootstrap, you'll also have to customize the grids in responsive.less.</p>
</div>
</div><!-- /row -->
</section>
<!-- Layouts (Default and fluid)
================================================== -->
<section id="layouts">
<div class="page-header">
<h1>Layouts <small>Basic templates to create webpages</small></h1>
</div>
<div class="row">
<div class="span6">
<h2>Fixed layout</h2>
<p>The default and simple 940px-wide, centered layout for just about any website or page provided by a single <code>&lt;div class="container"&gt;</code>.</p>
<div class="minicon-layout">
<div class="minicon-layout-body"></div>
</div>
<pre class="prettyprint linenums">
&lt;body&gt;
&lt;div class="container"&gt;
...
&lt;/div&gt;
&lt;/body&gt;
</pre>
</div><!-- /col -->
<div class="span6">
<h2>Fluid layout</h2>
<p><code>&lt;div class="container-fluid"&gt;</code> gives flexible page structure, min- and max-widths, and a left-hand sidebar. It's great for apps and docs.</p>
<div class="minicon-layout fluid">
<div class="minicon-layout-sidebar"></div>
<div class="minicon-layout-body"></div>
</div>
<pre class="prettyprint linenums">
&lt;div class="container-fluid"&gt;
&lt;div class="row-fluid"&gt;
&lt;div class="span2"&gt;
&lt;!--Sidebar content--&gt;
&lt;/div&gt;
&lt;div class="span10"&gt;
&lt;!--Body content--&gt;
&lt;/div&gt;
&lt;/div&gt;
&lt;/div&gt;
</pre>
</div><!-- /col -->
</div><!-- /row -->
</section>
<!-- Responsive design
================================================== -->
<section id="responsive">
<div class="page-header">
<h1>Responsive design <small>Media queries for various devices and resolutions</small></h1>
</div>
<!-- Supported devices -->
<div class="row">
<div class="span4">
<img src="assets/img/responsive-illustrations.png" alt="Responsive devices">
</div>
<div class="span8">
<h2>Supported devices</h2>
<p>Bootstrap supports a handful of media queries to help make your projects more appropriate on different devices and screen resolutions. Here's what's included:</p>
<table class="table table-bordered table-striped">
<thead>
<tr>
<th>Label</th>
<th>Layout width</th>
<th>Column width</th>
<th>Gutter width</th>
</tr>
</thead>
<tbody>
<tr>
<td>Smartphones</td>
<td>480px and below</td>
<td class="muted" colspan="2">Fluid columns, no fixed widths</td>
</tr>
<tr>
<td>Portrait tablets</td>
<td>480px to 768px</td>
<td class="muted" colspan="2">Fluid columns, no fixed widths</td>
</tr>
<tr>
<td>Landscape tablets</td>
<td>768px to 940px</td>
<td>44px</td>
<td>20px</td>
</tr>
<tr>
<td>Default</td>
<td>940px and up</td>
<td>60px</td>
<td>20px</td>
</tr>
<tr>
<td>Large display</td>
<td>1210px and up</td>
<td>70px</td>
<td>30px</td>
</tr>
</tbody>
</table>
<h3>What they do</h3>
<p>Media queries allow for custom CSS based on a number of conditions&mdash;ratios, widths, display type, etc&mdash;but usually focuses around <code>min-width</code> and <code>max-width</code>.</p>
<ul>
<li>Modify the width of column in our grid</li>
<li>Stack elements instead of float wherever necessary</li>
<li>Resize headings and text to be more appropriate for devices</li>
</ul>
</div>
</div>
<br>
<!-- Media query code -->
<h2>Using the media queries</h2>
<div class="row">
<div class="span5">
<p>Bootstrap doesn't automatically include these media queries, but understanding and adding them is very easy and requires minimal setup. You have a few options for including the responsive features of Bootstrap:</p>
<ol>
<li>Use the compiled responsive version, bootstrap-responsive.css</li>
<li>Add @import "responsive.less" and recompile Bootstrap</li>
<li>Modify and recompile responsive.less as a separate</li>
</ol>
<p><strong>Why not just include it?</strong> Truth be told, not everything needs to be responsive. Instead of encouraging developers to remove this feature, we figure it best to enable it.</p>
</div>
<div class="span7">
<pre class="prettyprint linenums">
// Landscape phones and down
@media (max-width: 480px) { ... }
// Landscape phone to portrait tablet
@media (max-width: 768px) { ... }
// Portrait tablet to landscape and desktop
@media (min-width: 768px) and (max-width: 940px) { ... }
// Large desktop
@media (min-width: 1200px) { .. }
</pre>
</div>
</div>
</section>
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<p>Designed and built with all the love in the world <a href="http://twitter.com/twitter" target="_blank">@twitter</a> by <a href="http://twitter.com/mdo" target="_blank">@mdo</a> and <a href="http://twitter.com/fat" target="_blank">@fat</a>.</p>
<p>Code licensed under the <a href="http://www.apache.org/licenses/LICENSE-2.0" target="_blank">Apache License v2.0</a>. Documentation licensed under <a href="http://creativecommons.org/licenses/by/3.0/">CC BY 3.0</a>.</p>
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