<table data-role="table" id="table-2" class="ui-responsive">
  <thead>
    <tr>
      <th>A</th>
      <th data-priority="1">B</th>
      <th data-priority="2">C</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>a1</td>
      <td>b1</td>
      <td>c1</td>
    </tr>
    <tr>
      <td>a2</td>
      <td>b2</td>
      <td>c2</td>
    </tr>
    <tr>
      <td>a3</td>
      <td>a3</td>
      <td>c3</td>
    </tr>
  </tbody>
</table>