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Bootstrap 创建缩略图的步骤如下：
1、在图像周围添加带有 class .thumbnail 的 <a> 标签.2、这会添加四个像素的内边距（padding）和一个灰色的边框。
有了一个基本的缩略图，我们可以向缩略图添加各种 HTML 内容，比如标题、段落或按钮。
具体步骤如下：1、把带有 class .thumbnail 的 <a> 标签改为 <div>。2、在该 <div> 内，您可以添加任何您想要添加的东西。由于这是一个 <div>，我们可以使用默认的基于 span 的命名规则来调整大小。
相关推荐：《bootstrap入门教程》
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role="button">点你 </a> <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" 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="btn btn-default" role="button">就点你 </a> </p> </div> </div> <div class="col-sm-6 col-md-3"> <div class="thumbnail"><img src="img/2.jpg"></div> <div class="caption"> <h2>漂亮的图片</h2> <p>漂亮的图片.漂亮的图片.</p> <p><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" 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="btn btn-primary" role="button">点你 </a> <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" 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="btn btn-default" role="button">就点你 </a> </p> </div> </div> <div class="col-sm-6 col-md-3"> <div class="thumbnail"><img src="img/2.jpg"></div> <div class="caption"> <h2>漂亮的图片</h2> <p>漂亮的图片.漂亮的图片.</p> <p><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" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" rel="external nofollow" 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