What does this mean?

All dialogs (sometimes knows as 'pop up windows') should declare an accessible label that can be read out by screen readers.

To do this, use aria-label to specify a label, or aria-labelledby to point to the id of an element that contains text describing the modal, e.g.:

<div role="dialog" aria-labelledby="title">
    <div id="title">
        This is a dialog

The above example dialog has a label of This is a dialog.

96% done

How close this website is to fixing this issue.

HTML Found on page Issues
<div role="dialog" tabindex="-1" class="gm-style-iw gm-style-iw-c" style="padding-right: 0px; padding-bottom: 0px; max-width: 648px; max-height: 433px; min-width: 0px;">...</div> 5
5 distinct issues were found in the sample of 125 web pages.
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