在table td rowspan跨越多行 保证同一行的单行元素不被拉大

结果如上图：

    <tr>
             <td colspan="1" rowspan="1">申请部门：</td>  
             <td colspan="1" rowspan="1" align="left">
             <s:select requiredLabel="true"  onchange="changelabel();" list="#session.Apvariety_list" theme="simple" name="applyvariety" id="applyvariety" listKey="apvcode" listValue="apvname" headerKey="" headerValue="请选择"></s:select>
             </td>             
             <td colspan="1" rowspan="1">申请人：</td>
             <td colspan="1" rowspan="1" align="left"><input name="applymessage" required="required" id="applymessage" /></td>
             <td colspan="2" rowspan="5"> <input name="reason" placeholder="详细说明" style="width: 100% ;height: 100%"/></td>
             
             </tr>