banner role is for defining a global site header, which usually includes a logo, company name, search feature, and possibly the global navigation or a slogan. It is generally located at the top of the page.
By default, the HTML's
<header> element has an identical meaning to the
banner landmark, unless it is a descendant of
<section>, at which point
<header> exposes a
generic role, and not the equivalent of the site-wide banner.
banner landmark role overwrites the implicit ARIA role of the container element upon which it is applied. It should be reserved for globally repeating site-wide content that is generally located at the top of every page.
The banner typically includes things such as a logo or corporate identity, or possibly a site-specific search tool, and is generally what your marketing team would call the "header" or "top banner" of the site. If the
header element technique is not being used for that banner, a declaration of
role="banner" should be used to define a banner landmark to assistive technologies.
Assistive technologies can identify the
header element of a page as the
banner if it is a descendant of the
body element, and not nested within an
Each page may have a
banner landmark, but each page should generally be limited to a single element with the role of banner. In the case of a page containing nested
application roles, each nested
application role may also have one
banner landmark. If a page includes more than one
banner landmark, each should have a unique accessible name.
Here's a fake simple banner with a skip to navigation link, a logo, a title and a subtitle. As this is the main header for the site, we've added the
banner landmark role to the container element.
<div role="banner"> <a href="#main" id="skipToMain" class="skiptocontent">Skip To main content</a> <img src="images/w3c.png" alt="W3C Logo" /> <h1>ARIA Landmarks</h1> <p>Identifying page subsections for easy navigation</p> <nav>…</nav> </div>
We could also have written the above with the HTML
<header> <a href="#main" id="skipToMain" class="skiptocontent">Skip To main content</a> <img src="images/w3c.png" alt="W3C Logo" /> <h1>ARIA Landmarks</h1> <p>Identifying page subsections for easy navigation</p> <nav>…</nav> </header>
While it is best to use the
header element and ensure it is not a descendant of any subsection of the page, sometimes you don't have access to the underlying HTML. If this is the case, you can add the role of
banner to the element of the page which should be exposed as a
|Accessible Rich Internet Applications (WAI-ARIA) |
|Unknown specification |