OULD mark no more than one element with the `"main"` role.

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### What to do

* Remove the `"main"` role from all but the one element that represents the main content on the page (highly recommended);
* **Or**, for each element with a `"main"` role, either set the value of the `aria-labelledby` attribute to the `id` value of any visible text that appropriately and uniquely describes the element's central content;
* **Or**, for el