Section Label Examples
            Sectioning elements (<article>,
            <aside>, <nav>,
            <section>, etc.) that are not the only one of its
            type on the page need a label, so screen reader users are able to
            easily understand the content and context of the section.
          
Labeling Sections with Visible Content
            If the section you need to label is labelled by an existing visible
            element, you can use aria-labelledby referencing the ID
            of that label.
          
            Note: as of this writing it appears a section element labelled
              this way does not appear in the VoiceOver Rotor, using
              aria-label noted below does.
          
Labeling Sections with aria-label
          
            If the section you need to label doesn't have an existing visible
            label to use, you can manually add a label using
            aria-label.