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| author | Mark Otto <[email protected]> | 2017-05-30 08:46:33 -0700 |
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| committer | Mark Otto <[email protected]> | 2017-05-30 08:46:33 -0700 |
| commit | d4eb0d4e739477fc51421eed29906addfd998a04 (patch) | |
| tree | 5ffe09c63ac4e522890fc7b2b87c0a47b0f1a971 /docs/getting-started/accessibility.md | |
| parent | 0c12ccbeb6fdf0dd3818f97260aa43c79108d377 (diff) | |
| parent | f95cbc5950bf31995f33023014c47a61665ffacc (diff) | |
| download | bootstrap-d4eb0d4e739477fc51421eed29906addfd998a04.tar.xz bootstrap-d4eb0d4e739477fc51421eed29906addfd998a04.zip | |
Merge branch 'v4-docs-streamlined' of https://github.com/twbs/bootstrap into v4-docs-streamlined
Diffstat (limited to 'docs/getting-started/accessibility.md')
| -rw-r--r-- | docs/getting-started/accessibility.md | 57 |
1 files changed, 0 insertions, 57 deletions
diff --git a/docs/getting-started/accessibility.md b/docs/getting-started/accessibility.md deleted file mode 100644 index c1fe73dc0..000000000 --- a/docs/getting-started/accessibility.md +++ /dev/null @@ -1,57 +0,0 @@ ---- -layout: docs -title: Accessibility -description: Learn how Bootstrap supports common web standards for making sites that are accessibile to those using assistive technology. -group: getting-started ---- - -Bootstrap follows common web standards and—with minimal extra effort—can be used to create sites that are accessible to those using <abbr title="Assistive Technology" class="initialism">AT</abbr>. - -## Contents - -* Will be replaced with the ToC, excluding the "Contents" header -{:toc} - -## Component requirements - -Some common HTML elements are always in need for basic accessibility enhancements through `role`s and Aria attributes. Below is a list of some of the most frequently used ones. - -### Button groups - -In order for assistive technologies–such as screen readers–to convey that a series of buttons is grouped, an appropriate `role` attribute needs to be provided. For button groups, this would be `role="group"`, while toolbars should have a `role="toolbar"`. - -In addition, groups and toolbars should be given an explicit label, as most assistive technologies will otherwise not announce them, despite the presence of the correct `role` attribute. In the examples provided here, we use `aria-label`, but alternatives such as `aria-labelledby` can also be used. - -## Skip navigation - -If your navigation contains many links and comes before the main content in the DOM, add a `Skip to main content` link before the navigation (for a simple explanation, see this [A11Y Project article on skip navigation links](http://a11yproject.com/posts/skip-nav-links/)). Using the `.sr-only` class will visually hide the skip link, and the <code>.sr-only-focusable</code> class will ensure that the link becomes visible once focused (for sighted keyboard users). - -{% callout danger %} -Due to long-standing shortcomings/bugs in Internet Explorer (see this article on [in-page links and focus order](http://accessibleculture.org/articles/2010/05/in-page-links/)), you will need to make sure that the target of your skip link is at least programmatically focusable by adding `tabindex="-1"`. - -In addition, you may want to explicitly suppress a visible focus indication on the target (particularly as Chrome currently also sets focus on elements with `tabindex="-1"` when they are clicked with the mouse) with `#content:focus { outline: none; }`. - -Note that this bug will also affect any other in-page links your site may be using, rendering them useless for keyboard users. You may consider adding a similar stop-gap fix to all other named anchors / fragment identifiers that act as link targets. -{% endcallout %} - -{% highlight html %} -<body> - <a href="#content" class="sr-only sr-only-focusable">Skip to main content</a> - ... - <div class="container" id="content" tabindex="-1"> - <!-- The main page content --> - </div> -</body> -{% endhighlight %} - -## Nested headings - -When nesting headings (`<h1>` - `<h6>`), your primary document header should be an `<h1>`. Subsequent headings should make logical use of `<h2>` - `<h6>` such that screen readers can construct a table of contents for your pages. - -Learn more at [HTML CodeSniffer](https://squizlabs.github.io/HTML_CodeSniffer/Standards/Section508/) and [Penn State's Accessability](http://accessibility.psu.edu/headings/). - -## Additional resources - -- ["HTML Codesniffer" bookmarklet for identifying accessibility issues](https://github.com/squizlabs/HTML_CodeSniffer) -- [The A11Y Project](http://a11yproject.com/) -- [MDN accessibility documentation](https://developer.mozilla.org/en-US/docs/Web/Accessibility) |