css - New HTML email rules: How to center without margin: auto? -

as per new email rules (thanks microsoft , google) margins stripped html. using margin: 0 auto out solution.

the structure is:

<table>   <tr>     <td align="center">       <a href="this element need centered" style="display: block; width: 50%;">button</a>     </td>   </tr> 

now add yet table inside td 2nd nested table , i'm hoping there different solution other nesting table. align="center" doesn't work.

try code, i'm using code send html email , works fine gmail, outlook

<table style="width: 100%;">    <tr>      <td style="text-align: center;">        <a href="this element need centered" style="display: inline-block; width: 50%;">button</a>      </td>    </tr>  </table>

also, can check allow css property html email here: https://www.campaignmonitor.com/css/