Any changes to the font-size on a link are ignored by Windows 10 Mail. You can see the issue in the screenshot below:

A screenshot showing the issue

The code is fairly straightforward and works in all other clients. HTML:

    <!-- Link Row : BEGIN -->
    <tr>
        <td bgcolor="#F7CE97" align="center" style="padding: 20px 0 20px 0; font-family: Arial,'Helvetica Neue',Helvetica,sans-serif, 'Raleway'; font-size: 32px; font-weight: bold; line-height: 1.1; color: #FFFFFF; text-align: center;">
            <a href="http://oozellsbuilding.co.uk/" target="_blank" rel="noopener" style="text-decoration: none;">
                <font color="#FFFFFF">Oozellsbuilding.co.uk</font>
                <img src="https://www.core-marketing.co.uk/core-clients/brindleyplace-business/17642-business-videos/images/chevron-right-white.png" width="35" height="35" alt="" border="0" align="center" style="width: 35px; height: 35px; font-family: Arial,'Helvetica Neue',Helvetica,sans-serif, 'Raleway'; font-size: 15px; line-height: 1.4; color: #020202; margin: auto;" class="g-img">
            </a>
        </td>
    </tr>
    <!-- Link Row : END -->

Is there any reason this should be happening?