primary() 首选项
success() 成功
info() 一般信息
warning() 警告
danger() 危险
<body> <br> <input type='button' value="默认样式"> <input type='button' value="首选项" class="btn btn-primary"> <input type='button' value="成功" class="btn btn-success"> <input type='button' value="一般信息" class="btn btn-info"> <input type='button' value="警告" class="btn btn-warning"> <input type='button' value="危险" class="btn btn-danger"> </body>
<p>默认段落</p>
<p class="bg-primary">首选项</p>
<p class="bg-success">成功</p>
<p class="bg-info">一般信息</p>
<p class="bg-warning">警告</p>
<p class="bg-danger">危险</p>
<br>
<span>默认文字</span>
<span class="text-primary">首选项</span>
<span class="text-success">首选项</span>
<span class="text-info">首选项</span>
<span class="text-warning">首选项</span>
<span class="text-danger">首选项</span>
<br>
<a href="#" class="btn btn-primary">连接1</a>
<a href="#" class="bg-success">连接2</a>
<a href="#" class="text-danger">连接3</a>
<br><br>
<div class="alert alert-warning">我是警告框</div>
<div class="alert alert-danger">我是危险信息</div>
<div class="panel panel-primary">
<div class="panel-heading">
<h4>我是面板的标题</h4>
</div>
<div class="panel-body">
我是面板的主体内容！
</div>
</div>
