padding in Outlook Classic

Before

<a href="https://example.com"
  style="background-color: #6d28d9; color: #fff;
         padding: 12px 32px; display: inline-block;
         text-decoration: none;">
  Click Here
</a>

After

<!--[if mso]>
<table role="presentation" cellpadding="0" cellspacing="0" border="0"
  style="border-collapse: collapse;">
  <tr>
    <td style="background-color: #6d28d9; padding: 0;
               mso-padding-alt: 12px 32px;">
      <!--[if mso]>
      <i style="letter-spacing: 32px; mso-font-width: -100%;
                mso-text-raise: 18pt;" hidden>&#8202;</i>
      <![endif]-->
      <a href="https://example.com"
        style="background-color: #6d28d9; color: #fff;
               mso-text-raise: 9pt; text-decoration: none;
               font-family: Arial, sans-serif; font-size: 14px;
               font-weight: bold;">Click Here</a>
      <!--[if mso]>
      <i style="letter-spacing: 32px; mso-font-width: -100%;"
         hidden>&#8202;</i>
      <![endif]-->
    </td>
  </tr>
</table>
<![endif]-->
<!--[if !mso]><!-->
<a href="https://example.com"
  style="background-color: #6d28d9; color: #fff;
         padding: 12px 32px; display: inline-block;
         text-decoration: none;">
  Click Here
</a>
<!--<![endif]-->