How to add Specify the <th> element each header cell is related to

Th Example.

index.html

Example: HTML

 <table>
  <tr>
    <th id="name" colspan="2">Name</th>
  </tr>
  <tr>
    <th headers="name">Firstname</th>
    <th headers="name">Lastname</th>
  </tr>
</table>

Output should be:

Type:	html
Category:	Web Tutorial
Sub Category:	HTML Attribute
Uploaded by:	Admin