参考下面的代码：<div class="alert alert-info">
<strong>Heads up!</strong>
Options for individual popovers can alternatively be specified through the use of data attributes.
</div>界面的显示结果如下：
参考下面的代码：<div class="alert alert-info">
<strong>Heads up!</strong>
Options for individual popovers can alternatively be specified through the use of data attributes.
</div>界面的显示结果如下：