<button role="button">...</button>

</pre>

<p>

Similarly, the following uses a `role=group` on a [^fieldset^] element, and a `role=Main` on a [^main^] element.

Similarly, the following uses a `role=group` on a [^fieldset^] element, and a `role=main` on a [^main^] element.

This is unnecessary, because the `fieldset` element is implicitly exposed as a `role=group`, as is the `main` element

implicitly exposed as a `role=main`. Again, in practice this will likely not have any unforeseen side effects to users

of assistive technology, as long as the declaration of the `role` value uses [=ASCII lowercase=].

Please see [[[#case-sensitivity]]] for more information.

implicitly exposed as a `role=main`.

</p>

<pre class="HTML example" title="Redundant role on fieldset and main">

&lt;!-- Avoid doing this! -->

&lt;fieldset role="group"&gt;...&lt;/fieldset&gt;

&lt;!-- or this! -->

&lt;main role="Main">...&lt;/main>

&lt;!-- And similarly this! -->

&lt;main role="main">...&lt;/main>

</pre>

<p>

The following uses a `role=list` on an [^ul^] element. As the `ul` element has an implicit role of `list`,