百度编辑器中设置表格居中

<table style="margin: 0 auto;">
    <tbody>
        <tr style="height:32px;page-break-inside:avoid" class="firstRow">
            <td width="91" valign="center" rowspan="8" style="padding: 0px 7px; border: 1px solid windowtext; word-break: break-all;">
                <p style="text-align:center">
                    <span style="font-family: 宋体;font-size: 14px">一般参数</span>
                </p>
            </td>
            <td width="82" valign="center" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: windowtext; border-bottom-color: windowtext;">
                <p style="text-align:center">
                    <span style="font-family: 宋体;font-size: 14px">处理器</span>
                </p>
            </td>
            <td width="388" valign="center" style="padding: 0px 7px; border-width: 1px; border-style: solid; border-left-color: initial; border-right-color: windowtext; border-top-color: windowtext; border-bottom-color: windowtext;">
                <p>
                    <span style="font-family: 宋体;font-size: 14px">八核 64位 1.7GHz</span>
                </p>
            </td>
        </tr>
   </tbody>
</table>