nizongfeng
/
ZZIMG


			
				
					
						
						
							
							<div class="bs-docs-section">
  <h1 id="accessibility" class="page-header">Accessibility</h1>
  <p class="lead">Bootstrap follows common web standards and&mdash;with minimal extra effort&mdash;can be used to create sites that are accessible to those using <abbr title="Assistive Technology" class="initialism">AT</abbr>.</p>

  <h3>Skip navigation</h3>
  <p>If your navigation contains many links and comes before the main content in the DOM, add a <code>Skip to main content</code> link immediately after your opening <code>&lt;body&gt;</code> tag. <a href="http://a11yproject.com/posts/skip-nav-links/">(read why)</a></p>
{% highlight html %}
<body>
  <a href="#content" class="sr-only sr-only-focusable">Skip to main content</a>
  <div class="container" id="content">
    The main page content.
  </div>
</body>
{% endhighlight %}

  <h3>Nested headings</h3>
  <p>When nesting headings (<code>&lt;h1&gt;</code> - <code>&lt;h6&gt;</code>), your primary document header should be an <code>&lt;h1&gt;</code>. Subsequent headings should make logical use of <code>&lt;h2&gt;</code> - <code>&lt;h6&gt;</code> such that screen readers can construct a table of contents for your pages.</p>
  <p>Learn more at <a href="http://squizlabs.github.io/HTML_CodeSniffer/Standards/Section508/">HTML CodeSniffer</a> and <a href="http://accessibility.psu.edu/headings">Penn State's AccessAbility</a>.</p>

  <h3>Additional resources</h3>
  <ul>
    <li><a href="https://github.com/squizlabs/HTML_CodeSniffer">"HTML Codesniffer" bookmarklet for identifying accessibility issues</a></li>
    <li><a href="http://a11yproject.com/">The A11Y Project</a></li>
    <li><a href="https://developer.mozilla.org/en-US/docs/Accessibility">MDN accessibility documentation</a></li>
  </ul>
</div>