title: ExtJs 3. : How to add borders for the grid body cells(without gird header)
body: <p>I want to add grid cell border without grid header so I add CSS class for gird.
  this my CSS class</p>
  
  <pre><code>#table_id td {    
  border-color: #A8A8A8 ;
  border-style: solid ;
  border-width: 1px ;
  z-index: 55000 ;
  }
  </code></pre>
  
  <p>Above CSS creates border for gird header. So how can I remove grid header cell border?</p>