Table headers over 20 characters should provide an “abbr” attribute¶
Severity code: Information only
For long table headers, use an “abbr” attribute that is less than short (less than 20 characters long).
<h4>Examples</h4>Wrong¶
<th>The total number of people who liked chocolate</th>
Right¶
<th abbr="Like Chocolate">The total number of people who liked chocolate</th>