css/css-tables/border-collapse-dynamic-col-001-ref.html

<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Test Reference</title>
<link rel="author" title="Emilio Cobos Álvarez" href="mailto:emilio@crisal.io">
<link rel="author" title="Mozilla" href="https://mozilla.org">
<style>
  table {
    border-collapse: collapse;
    border-spacing: 0;
  }
  td {
    padding: 10px;
    border: 1px solid;
  }
</style>
<table>
  <colgroup>
    <col>
    <col>
    <col>
    <col>
  </colgroup>
  <tbody>
    <tr>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
    <tr>
      <td></td>
      <td></td>
      <td></td>
      <td></td>
    </tr>
  </tbody>
</table>