HTML Email : make fonts lighter

<table width="600" cellspacing="0" cellpadding="0" border="0" align="center" style="background-image: url(http://www.hubilo.com/eventApp/ws/images/event/cover/facebook/thumb/2712_1467715620.jpg); background-repeat: no-repeat; background-size: cover; -moz-background-size: cover; -o-background-size: cover; -webkit-background-size: cover; border-collapse: collapse; mso-table-lspace: 0pt;mso-table-rspace: 0pt; width: 100%; ">
  <tbody>

    <tr>
      <td valign="top" align="center" height="80"></td>
    </tr>

    <tr>
      <td class="h2" valign="top" align="center" style="color: white; text-align: center; text-transform: uppercase; font-weight:100 !important; letter-spacing: 12px; font-size: 32px; ">
        <p>TIECON</p>
      </td>
    </tr>


  </tbody>

</table>

Copyright Notice：Content Author:「user6751084」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/39163254/html-email-make-fonts-lighter