how to make table header same width as column code example

Example: html make table columns same width

<table style="table-layout: fixed; width: 100%;" >
<tr>
  <td style="width:25%;">First column</td>
  <td style="width:25%;">Second column</td>
  <td style="width:25%;">Third column</td>
  <td style="width:25%;">Fourth column</td>
</tr>