<table style="margin: 0 0 0.5em;">
    <tbody style="border-top:0;">
        <tr>
            <td width="48%">
                <label for="first" class="md_blk">First name</label>
                <input class="form-text s100" name="first" type="text" value="">
                </td>
                <td width="4%">&nbsp;</td>
                <td width="48%">
                    <label for="last" class="md_blk">Last name</label>
                    <input class="form-text s100" name="last" type="text" value="">
                    </td>
                </tr>
            </tbody>
        </table>