大家好，我又来提问了
下面这段代码的按钮效果实现不出来，是哪里出问题了嘛？Info跟Dlete按钮看上去跟Like不一样
<link href="//fonts.gdgdocs.org/css?family=Lobster" rel="stylesheet" type="text/css">
<style>
.red-text {
color: red;
}
h2 {
font-family: Lobster, Monospace;
}
p {
font-size: 16px;
font-family: Monospace;
}
.thick-green-border {
border-color: green;
border-width: 10px;
border-style: solid;
border-radius: 50%;
}
.smaller-image {
width: 100px;
}
</style>
<div class="container-fluid">
<h2 class="red-text text-center">CatPhotoApp</h2>
<p>Click here for <a href="#">cat photos</a>.</p>
<a href="#"><img class="smaller-image thick-green-border" src="/images/relaxing-cat.jpg"></a>
<img src="/images/running-cat.jpg" class="img-responsive">
<div class="row">
<div calss="col-xs-4">
<button class="btn btn-block btn-primary">Like</button>
</div>
<div class="col-xs-4">
<button class="btn btn-block btn-info">Info</button>
</div>
<div class="col-xs-4">
<button class="btn btn-block btn-danger">Delete</button>
</div>
</div>
<p>Things cats love:</p>
<ul>
<li>cat nip</li>
<li>laser pointers</li>
<li>lasagna</li>
</ul>
<p>Top 3 things cats hate:</p>
<ol>
<li>flea treatment</li>
<li>thunder</li>
<li>other cats</li>
</ol>
<form action="/submit-cat-photo">
<label><input type="radio" name="indoor-outdoor"> Indoor</label>
<label><input type="radio" name="indoor-outdoor"> Outdoor</label>
<label><input type="checkbox" name="personality"> Loving</label>
<label><input type="checkbox" name="personality"> Lazy</label>
<label><input type="checkbox" name="personality"> Crazy</label>
<input type="text" placeholder="cat photo URL" required>
<button type="submit">Submit</button>
</form>
</div>
请问大神是什么情况？ 这些样式都是调用框架封装好的样式：
btn btn-block btn-primary、btn btn-block btn-info、btn btn-block btn-danger
对应的样式不一样，看着像bootstarp 是按纽的功能没有还是样式没有？功能没有去查JS，样式没有去查上面那个LINK有没有引用正确 功能没有查JS,样式没有查LINK
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