title: How to apply css to jqgrid header column
body: <p>I am drawing a table with jqgrid.</p>
  <p>I want to change the background color and text color of the header.</p>
  <p>I am trying to change the css by applying a class to the header, how can I apply it?</p>
  <p>I want it to apply only to specific header cells, not columns or rows.</p>