<style type="text/css">
.tg  {border-collapse:collapse;border-spacing:0;}
.tg td{font-family:Arial, sans-serif;font-size:14px;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;}
.tg th{font-family:Arial, sans-serif;font-size:14px;font-weight:normal;padding:10px 5px;border-style:solid;border-width:1px;overflow:hidden;word-break:normal;}
.tg .tg-yw4l{vertical-align:top}
</style>
<table class="tg">
  <tr>
    <th class="tg-yw4l">Col1</th>
    <th class="tg-yw4l">Col2</th>
  </tr>
  <tr>
    <td class="tg-yw4l">1</td>
    <td class="tg-yw4l">2</td>
  </tr>
  <tr>
    <td class="tg-yw4l">3</td>
    <td class="tg-yw4l">4</td>
  </tr>
</table>