<div class="row">
  <div class="col-md-3 col-sm-6">
    <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="thumbnail"><img src="/UploadFiles/2021-04-02/01.png">

2.缩略图添加内容



<div class="row">
  <div class="col-md-4 col-sm-6">
    <div class="thumbnail">
      <a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" ><img src="/UploadFiles/2021-04-02/01.png">

3.警告框

点击右上角叉号就关闭警示框。可以更改背景色alert-warning、alert-info、alert-success、alert-danger
可关闭的警示框添加类;alert-dismissible和按钮button.
也可以在警告框中添加a链接：


<p>这里是提示信息<a href="#" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" class="alert-link">百度</a></p>

<div class="alert alert-warning alert-dismissible">
  <button type="button" class="close" data-dismiss="alert">&times;</button>
  <p>这里是提示信息</p>
</div>


以上所述是小编给大家介绍的 Bootstrap笔记之缩略图、警告框实例详解，希望对大家有所帮助，如果大家有任何疑问请给我留言，小编会及时回复大家的。在此也非常感谢大家对网站的支持！