table <thead>表格css‘样式

<table  class="table table-bordered table-hover" id="">

 <thead>

 <th>操作</th>

 </thead>

 <tbody>

 <tr>

　　<td></td>

 </tr>
</tbody>
</table>
                                                                   

    <style type="text/css">

            table th {

                white-space: nowrap;

            }

            table td {

                white-space: nowrap;

            }

            table {

                empty-cells: show;

                border-collapse: collapse;

                margin: 0 auto;

            }

    .table-bordered{

                         border: 1px solid #ddd;

                         border-collapse: separate;

                          border-left:;

                          }

         .table-hover tr:hover {background:#eee}

        </style>