Bootstrap（十）：组件--按钮组

<h3>横排</h3>
<div class="btn-group" >
  <button type="button" class="btn btn-danger" >Left</button>
  <button type="button" class="btn btn-default">Middle</button>
  <button type="button" class="btn btn-default">Right</button>
</div>

<h3>竖排</h3>

<div class="btn-group-vertical">
  <button type="button" class="btn btn-default">Left</button>
  <button type="button" class="btn btn-default">Middle</button>
  <button type="button" class="btn btn-default">Right</button>
</div>


<h3>工具栏</h3>


<div class="btn-toolbar">
    <div class="btn-group" >
      <button type="button" class="btn btn-default">1</button>
      <button type="button" class="btn btn-info">2</button>
      <button type="button" class="btn btn-success">3</button>
    </div>
    
    <div class="btn-group" >
      <button type="button" class="btn btn-default">4</button>
      <button type="button" class="btn btn-info">5</button>
      <button type="button" class="btn btn-success">6</button>
    </div>

</div>