f the `<body>` element, and each element with `role="banner"`, either set the value of the `aria-labelledby` attribute of each banner to the `id` value of any visible text that appropriately and uniquely describes that banner's purpose;
* **Or**, use the `aria-label` attribute to add an invisible, unique, non-empty label to each element with the `"banner"` role.

For example:

```
<h1 id="weather">Weather portlet</h1>
<header aria-labelledby="weather">
   ...
</header>
    
<div role="banner" aria-label="St