Please! Help me check the compatibility issue of html. It's very challenging. I spent an afternoon and couldn't figure it out_html/css_WEB-ITnose

<style>    th {        text-align: center;        padding: 6px 5px;        font-weight: bolder;        color: #07665e;        background-color: #e7f2f1;    }    #PMANList1 th {        white-space: normal;    }    #PMANList2 th {        white-space: normal;    }    #PMANList3 th {        white-space: normal;    }</style><div style="border:solid 1px #666666;padding:5px;position:relative">    <legend style="position:absolute;background:#ffffff;left:10px;top:-10px">aaa</legend>    <div id="keyinlayer1" style="min-height: 200px; clear: both;">        <table class="Edit" style="width: 100%;">            <tr>                <td class="AreaHeader" valign="middle" style="background-color: #eee; color: #575757;">谢谢朋友能送我到这里！今晚又得露宿街头啦，睡马路 希望不要下雨哦……)<br />                    (谢谢朋友能送我到这里！今晚又得露宿街头啦，睡马路 希望不要下雨哦……))                <input type="button" value="客管?入" style="float: right; margin-top: 5px" onclick="ReadFromCstmManager(1)" />                    <input type="button" value="新增受益人" style="float: right; margin-top: 5px" onclick="    addPMAN(1, 1)" />                </td>            </tr>            <tr>                <td>                    <table id='PMANList1' width="100%">                        <tr class="header">                            <th style="width: 80px;">00</th>                            <th style="width: 90px;">1111111</th>                            <th style="width: 100px;">2222</th>                            <th style="width: 100px; white-space: normal; word-break: break-all;">333333333333</th>                            <th style="width: 180px;">4444</th>                            <th></th>                        </tr>                    </table>                </td>            </tr>        </table>    </div>    <div id="keyinlayer2" style="min-height: 200px; clear: both; width: 100%; overflow: auto;">        <table class="Edit" id="table2" style="width: 1800px;">            <tr>                <td colspan="6" class="AreaHeader" valign="middle" style="background-color: #eee; color: #575757;">谢谢朋友能送我到这里！今晚又得露宿街头啦，睡马路 希望不要下雨哦……)<br />                    谢谢朋友能送我到这里！今晚又得露宿街头啦，睡马路 希望不要下雨哦……)              <input type="button" value="客管?入" style="float: right; margin-top: 5px;" onclick="ReadFromCstmManager(2)" /><input type="button" value="新增受益人" style="float: right; margin-top: 5px" onclick="    addPMAN(2, 1)" />                </td>            </tr>            <tr>                <td colspan="2">                    <table id='PMANList2'>                        <tr class="header">                            <th width="80">00</th>                            <th width="80" class="USD">1111</th>                            <th width="90">222222</th>                            <th width="100">3333</th>                            <th style="width: 100px; white-space: normal; word-break: break-all;">44444444444</th>                            <th width="115">55555</th>                            <th width="115">66</th>                            <th width="115" class="USD">777777</th>                            <th width="180">8888</th>                            <th></th>                        </tr>                    </table>                </td>            </tr>        </table>    </div>    <div id="keyinlayer3" style="min-height: 200px; clear: both;">        <table class="Edit" style="width: 100%">            <tr>                <td colspan="6" class="AreaHeader" valign="middle" style="background-color: #eee; color: #575757;">谢谢朋友能送我到这里！今晚又得露宿街头啦，睡马路 希望不要下雨哦……)<br />                    谢谢朋友能送我到这里！今晚又得露宿街头啦，睡马路 希望不要下雨哦……)                                        <input type="button" value="客管?入" style="float: right; margin-top: 5px" onclick="ReadFromCstmManager(3)" /><input type="button" value="新增受益人" style="float: right; margin-top: 5px" onclick="    addPMAN(3, 1)" /></td>            </tr>            <tr>                <td colspan="2">                    <table id='PMANList3' width="100%">                        <tr class="header">                            <th width="80">00</th>                            <th width="90">111111</th>                            <th width="100">2222</th>                            <th style="width: 100px; white-space: normal; word-break: break-all;">333333333333</th>                            <th width="180">4444</th>                            <th></th>                        </tr>                    </table>                </td>            </tr>        </table>    </div></div>