当列以移动模式堆叠时，我想要一些垂直空间分隔列内容，我该怎么做？
在http://jsfiddle.net/tofutim/3sWEN/中看到jsfiddle并改变输出的宽度。在第二个叶尖之前应该有一些间距。
<div class="container">
<div class="well well-lg" style="margin:10px">
<div class="row">
<div class="col-sm-6">
<p>"Lorem ipsum dolor sit amet,consectetur adipisicing elit,sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."</p>
<form>
<input type="textBox" class="form-control" placeholder="Username"></input>
<input type="password" class="form-control" placeholder="Password"></input>
</form>
</div>
<div class="col-sm-6">
<p>"Lorem ipsum dolor sit amet,sed do eiusmod tempor incididunt ut labore et dolore magna aliqua."</p>
<form role="form">
<div class="form-group">
<button class="form-control btn btn-default">Push me</button>
<input type="textBox" class="form-control" placeholder="Username"></input>
<input type="password" class="form-control" placeholder="Password"></input>
</div>
</form>
</div>
</div>
</div>
</div>