为什么我输入table-hover的属性不显示效果
<table class="table table-hover table-bordered">
<thead>
<tr>
<td>列表一</td>
<td>列表二</td>
<td>列表三</td>
<td>列表四</td>
<td>列表五</td>
</tr>
<tr class="danger">
<td>one</td>
<td>two</td>
<td>three</td>
<td>five</td>
<td>four</td>
</tr>
<tr class="waring">
<td>one</td>
<td>two</td>
<td>three</td>
<td>five</td>
<td>four</td>
</tr>
<tr class="success">
<td>one</td>
<td>two</td>
<td>three</td>
<td>five</td>
<td>four</td>
</tr>
<tr class="active">
<td>one</td>
<td>two</td>
<td>three</td>
<td>five</td>
<td>four</td>
</tr>
</thead>
</table>