HTML col Tag

The <col> tag defines attribute values for one or more columns in a table.

The <col> tag is useful for applying styles to entire columns, instead of repeating the styles for each cell, for each row.

The <col> tag can only be used inside a table or a colgroup element.

Example:
<table width="100%" border="1">
  <col align="left" />
  <col align="left" />
  <col align="right" />
  <tr>
    <th>ISBN</th>
    <th>Title</th>
    <th>Price</th>
  </tr>
  <tr>
    <td>3476896</td>
    <td>My first HTML</td>
    <td>$53</td>
  </tr>
</table>