title: I want to create a nested table or table row
body: <p>When I use nested <code>&lt;table&gt;</code> or nested <code>&lt;tr&gt;</code> , I can't create a column like that . Can anyone help me ????.
  This picture is exactly what I want .</p>
  
  <p><a href="https://i.stack.imgur.com/YrjNF.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/YrjNF.png" alt="enter image description here"></a></p>