title: How to align <td rowspan ="value"> value to center vertically?
body: <p>I need to align <code>td</code> cell value to center, both horizontally and vertically. <code>&lt;td&gt;</code> has a <code>rowspan</code> attribute.</p>
  
  <p>The output right now is like:</p>
  
  <pre><code>A  |  B  |  C  |  D 
  1  |  2  |  3  |  4
  1  |  2  |  3  |  
  1  |  2  |  3  |  
  </code></pre>
  
  <p>Desired:</p>
  
  <pre><code>A  |  B  |  C  |  D
  1  |  2  |  3  |  
  1  |  2  |  3  |  4
  1  |  2  |  3  |  
  1  |  2  |  3  |  
  </code></pre>