show_success_message.naml

<override_macro name="show_success_message">
    <table class="info-message" style="width:100%;padding:.5em">
        <tr>
            <td><img src="/images/success.png"/></td>
            <td style="width:100%;font-weight:bold">
                <t>Success: a confirmation email has been sent to you which requires your action. Please check your spam/junk folder if you don't receive this e-mail in the next few minutes.</t>
            </td>
        </tr>
    </table>
</override_macro>