html中table表格的内容水平和垂直居中显示

#class td /*设置表格文字左右和上下居中对齐*/ {      vertical-align: middle;    text-align: center;  }/*class 是所属的类*/<div id="class" align="center" style= "margin: 0cm 0cm 0pt; text-align: left">                                                                      <table class="table table-bordered" border="1" width="100%" style="font-size: 14pt; color: #000000; font-family: 楷体;mso-ascii-font-family: 'times new roman'; mso-hansi-font-family: 'times new roman'">                                                             <caption><h2 style="text-align: left;font-size: 16pt;font-family: 宋体;color: red;">title</h2></caption>                                                              <tbody >                                                                 <tr style="font-weight: bold;mso-bidi-font-size: 12.0pt;font-family: 宋体;" >                                                                      <td>序号</td>                                                                      <td>适用情况</td>                                                                       <td>详情</td>                                                                       <td>备注</td>                                                                    </tr>                                                                                                                                       <tr>                                                                    <td>1</td>                                                                     <td>xxxxx</td>                                                                      <td style="text-align: left;"> <!--指定靠左对齐-->                                                                      <span>                                                                             xxxxxx<br>                                                                                                                                                        </span>                                                                      </td>                                                                       <td><a href="#">查看详情</a></td>                                                              </tr>                                                </tbody>                                                          </table> </div>