Within our emails we have are all of our font families designated as: font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif

But for whatever reason, the text within our buttons keeps defaulting to Times New Roman. Here is the code we are using for the button:

<tr>
    <td style="padding: 0 32px 32px 32px;" class="p-global">
        <!-- EXPANDED MOBILE BUTTON -->
        <table width="100%" border="0" cellspacing="0" cellpadding="0" class="btn-container">
            <tr>
                <td align="center" style="padding-top:0px;">
                    <table border="0" cellspacing="0" cellpadding="0" class="wrapper">
                        <tr>
                            <td align="center" style="-webkit-border-radius:3px; -moz-border-radius:3px; border-radius:3px;" bgcolor="#A0C30C"><a href="https://register.lifetimefitness.com/usbank" target="_blank" style="color:#444444; border:1px solid #A0C30C; -webkit-border-radius:3px; -moz-border-radius:3px; border-radius:3px; display:inline-block; font-family:'Helvetica Neue', Helvetica, Arial, sans-serif; font-size:16px; font-weight:500; letter-spacing:0.5px; padding:14px 24px 14px 24px; text-decoration:none;" class="btn-expand">Create Your Account</a>
                            </td>
                        </tr>
                    </table>
                </td>
            </tr>
            <tr>
                <td align="center" style="color:#707070; font-family:'Helvetica Neue', Helvetica, Arial, sans-serif; font-size:16px; line-height:24px; padding:32px 32px 0px 32px;" class="p-global">Having trouble registering? Please contact<br><a href="mailto:support@lthealth.com" style="color:#4A90E2; text-decoration:none;">support@lthealth.com</a>
                </td>
            </tr>
        </table>
    </td>
    </tr>

Here is a screenshot as well.