//bootstrap网站就有css文件下载
Document<form action="" method="POST" class="form-horizontal" role="form">
<div class="form-group">
<legend>Form title</legend>
</div>
<div class="form-group">
<div class="col-sm-10 col-sm-offset-2">
<button type="submit" class="btn btn-primary">Submit</button>
</div>
</div>
</form>
<h1 class="text-danger">呆瓜</h1>
<h1 class="bg-danger">呆瓜</h1>
<a href="#" class="btn btn-danger">呆瓜按钮</a>
<table class="table table-bordered table-striped table-hover">
<thead>
<tr>
<th>呆瓜</th>
<th>呆瓜</th>
<th>呆瓜</th>
</tr>
</thead>
<tbody>
<tr class="danger">
<td>呆瓜</td>
<td>呆瓜</td>
<td>呆瓜</td>
</tr>
<tr>
<td>呆瓜</td>
<td>呆瓜</td>
<td>呆瓜</td>
</tr>
<tr>
<td>呆瓜</td>
<td>呆瓜</td>
<td>呆瓜</td>
</tr>
</tbody>
</table>