title: How to add border for html tr
body: <p>Suppose i defined such a table</p>
  
  <pre><code>1    Chailie     23  Joker   Bass
  2    Chailie     23  Joker   Bass
  3    Chailie     23  Joker   Bass
  4    Chailie     23  Joker   Bass
  5    Chailie     23  Joker   Bass
  6    Chailie     23  Joker   Bass
  </code></pre>
  
  <p>Now i want to make it looks like this</p>
  
  <pre><code>|----------------------------------------|
  |1   Chailie     23  Joker   Bass        |
  |2   Chailie     23  Joker   Bass        |
  |3   Chailie     23  Joker   Bass        |
  |----------------------------------------|
  |4   Chailie     23  Joker   Bass        |
  |5   Chailie     23  Joker   Bass        |
  |6   Chailie     23  Joker   Bass        |
  |----------------------------------------|
  </code></pre>
  
  <p>as you see,i's like to add  border for a part of tr and make it looks like been grouped,
  does anybody know how to achieve this?e.g can i add some kinda of css to set such border?</p>