Bootstrap菜单隐藏在面板后面,与z-index 无关:
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<!-- Latest compiled and minified CSS -->
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/css/bootstrap.min.css" integrity="sha384-BVYiiSIFeK1dGmJRAkycuHAHRg32OmUcww7on3RYdg4Va+PmSTsz/K68vbdEjh4u" crossorigin="anonymous">
<!-- Latest compiled and minified JavaScript -->
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.7/js/bootstrap.min.js" integrity="sha384-Tc5IQib027qvyjSMfHjOMaLkfuWVxZxUPnCJA7l2mCWNIpG9mGCD8wGNIcPD7Txa" crossorigin="anonymous"></script>
<div class="panel panel-default">
<div class="panel-heading">
<i class="fa fa-calendar fa-fw"></i> System Years
<div class="pull-right">
<button type="button" class="btn btn-info btn-xs btn-add-year " data-toggle="tooltip" title="Add year"><i class="fa fa-plus"></i></button>
</div>
</div>
<!-- /.panel-heading -->
<div class="panel-body">
<div class="table-responsive">
<table class="table table-bordered table-hover table-striped">
<tbody>
<tr>
<td>
<strong>2014</strong>
<div class="btn-group">
<button type="button" class="btn btn-success btn-xs dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Menu 1 <span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a href="javascript:;">All</a></li>
<li><a href="javascript:;">Other</a></li>
</ul>
</div>
</td>
</tr>
<tr>
<td>
<strong>2015</strong>
<div class="btn-group">
<button type="button" class="btn btn-success btn-xs dropdown-toggle" data-toggle="dropdown" aria-haspopup="true" aria-expanded="false">
Menu 2 <span class="caret"></span>
</button>
<ul class="dropdown-menu">
<li><a href="javascript:;">All</a></li>
<li><a href="javascript:;">Other</a></li>
</ul>
</div>
</td>
</tr>
</tbody>
</table>
</div>
<!-- /.table-responsive -->
</div>
<!-- /.panel-body -->
</div>
最佳答案
问题与父div的溢出有关。请参见该div的以下代码,并参见图片以供引用:
@media screen and (max-width: 767px)
tables.less:180
.table-responsive {
width: 100%;
margin-bottom: 15px;
overflow-y: visible;
-ms-overflow-style: -ms-autohiding-scrollbar;
border: 1px solid #ddd;
height: 120px;
}