小编use*_*714的帖子

我有以下HTML代码:

<div class="row">
<div class="col-lg-3">
 <div class="panel panel-default">
  <div class="panel-body">
    Panel 1 (left)
    </div>
  </div>
</div> 

<div class="col-lg-6">
 <div class="panel panel-default">
  <div class="panel-body">
    Panel 2 (center)
    </div>
   </div>
 </div>
</div>

<div class="col-lg-3">
 <div class="panel panel-default">
  <div class="panel-body">
    Panel 3 (right)
    </div>
   </div>
 </div>
</div>

</div>

<div class="row">
<div class="col-lg-3">
 <div class="panel panel-default">
  <div class="panel-body">
    Panel 2-2 (under panel 2)
    </div>
  </div>
</div>
</div> 

最终结果应如下所示:
并且它可以工作,但是如果面板3的高度比面板1或2高,我得到这个:

我该如何解决？