Bootstrap div清除修复

Question

嗨，我有3个div，我想要div＆＃34; aaaa＆＃34;起来但我不能这样。我使用clearfix做了我的代码;

＆＃13;

＆＃13;

<div class="container">
    <div class="row">
       <div class="col-md-3 br">s</div>
       <div class="clearfix"> </div>
       <div class="col-md-3 br">s</div>
       <div class="col-md-9 br" style="height:700px">aaa</div>
    </div>
</div>

＆＃13;

＆＃13;

＆＃13;

我的形象;

Answer 1

试试这个，希望它有效

<div class="container">
  <div class="row">
    <div class="col-md-3 br">
      <div class="row">
        <div class="col-md-12">s</div>
        <div class="col-md-12">s</div>
      </div>
    </div>

    <div class="col-md-9 br" style="height:700px">aaa</div>
  </div>
</div>

Answer 2

也许：

<div class="container">
    <div class="row">
      
      <div style="float: left; border: 1px solid #f00;">
        <div>s</div>
        <div>s</div>
      </div>
       
      <div>
        <div>aaa</div>
      </div>       
      
    </div>
</div>