Description: The WAI-ARIA ‘aria-describedby’ attribute has a reference to an ID that does not exist or an ID that is not unique.
Context: All ARIA tags must reference elements that exist on the page, an ID should only be used once on any given page.
<table class="table table-responsive" aria-describedby="summary">
<caption>
UH Mānoa Materials Deadlines
</caption>
</table>
How to fix it: Use semantic elements to indicate emphasis or structure, and CSS to handle styling.
<table class="table table-responsive" aria-describedby="summary">
<caption>
UH Mānoa Materials Deadlines
</caption>
</table>
<p id="summary">A table of material deadlines for UH Mānoa</p>