<style> element not supported in new Outlook

https://www.caniemail.com/features/html-style/

The following HTML content was formatted properly in Outlook and GMail. However, in the new Outlook, the <style> element seems to be completely ignored as that table is displayed without any styling. Even wrapping the <style> element into the <head> doesn't help here.

<style>
  table, th, td {border: 1px solid black; border-collapse: collapse;}
  th, td {padding: 5px 10px;}
  .ok {background-color:green;}
  .warning {background-color: orange;}
  .error {background-color: red}
</style>
<table>
  <thead>
    <tr>
      <th>#</th>
      <th>Result</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td>1</td>
      <td class='ok'></td>
    </tr>
    <tr>
      <td>2</td>
      <td class='warning'></td>
    </tr>
  </tbody>
</table>

hteumeuleu / caniemail

<style> element not supported in new Outlook #440