table css 控制

<table cellpadding="5" cellspacing="2" border frame=box rules=all class="table_bg">    <tr>        <th >申请编号</th>        <td>            KP16030710206127        </td>        <th >申请时间</th>        <td >2016/3/7 14:47</td>        <th>申请人</th>        <td >胡天宁</td>        </tr>    <tr>        <th >发票状态</th>        <td ><span class="red">待经理审核</span></td>        <th >驳回原因</th>        <td ><span class="red">未到开票时间</span></td>        </tr>
</table>
<style>
.table_bg{    border: solid #95B8E7;    border-width: 1px 0px 0px 1px;    width: 100%;    margin-bottom: 20px;    margin-top:10px;}.table_bg th{    border: solid #95B8E7;    border-width: 0px 1px 1px 0px;    background-color:#E2E7EC ;    width:10%}.table_bg td{    border: solid #95B8E7;    border-width: 0px 1px 1px 0px;    width:20%}
</style>