gap in Outlook for Mac

Before

<div style="display: flex; gap: 16px;">
  <div>Item 1</div>
  <div>Item 2</div>
  <div>Item 3</div>
</div>

After

<table role="presentation" cellpadding="0"
  cellspacing="0" border="0">
  <tr>
    <td style="padding-right: 16px;">Item 1</td>
    <td style="padding-right: 16px;">Item 2</td>
    <td>Item 3</td>
  </tr>
</table>