title: Locate 3 html div in different height 1st on left, 2nd and 3rd on the right
body: <p>I use bootstrap and want to locate three div's as shown below.
  Could you please give a sample demo that can meet this requirement? 
  If it is possible, it would be better to use bootstrap.css?
  Thanks in advance. </p>
  
  <p><img src="https://i.stack.imgur.com/uFrXZ.png" alt=""></p>
  
  <p><strong>Html:</strong></p>
  
  <p></p>
  
  <pre><code>&lt;!-- Navigation --&gt;
  &lt;div class="navbar navbar-default navbar-fixed-top"&gt;
      &lt;div class="container"&gt;
          &lt;div class="navbar-header"&gt;
              &lt;a href="http://usebootstrap.com/" class="navbar-brand"&gt;UseBootstrap&lt;/a&gt;
              &lt;button class="navbar-toggle" type="button" data-toggle="collapse" data-target="#navbar-main"&gt;
                  &lt;span class="icon-bar"&gt;&lt;/span&gt;
                  &lt;span class="icon-bar"&gt;&lt;/span&gt;
                  &lt;span class="icon-bar"&gt;&lt;/span&gt;
              &lt;/button&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  
  &lt;!-- Page Content --&gt;
  &lt;div class="container"&gt;
  
      &lt;div class="row"&gt;
          &lt;div class="col-md-6 portfolio-item"&gt;
              &lt;div class="panel panel-primary" style="height:325px !important;"&gt;
                  &lt;div class="panel-heading"&gt;
                      &lt;h3 class="panel-title" id="panel-title"&gt;AAAAAAAAAAAAAA&lt;a href="#panel-title" class="anchorjs-link"&gt;&lt;span class="anchorjs-icon"&gt;&lt;/span&gt;&lt;/a&gt;&lt;/h3&gt;
                  &lt;/div&gt;
                  &lt;div&gt;
                      Content AAAAAAAA
                  &lt;/div&gt;
              &lt;/div&gt;
          &lt;/div&gt;
          &lt;div class="col-md-6 portfolio-item"&gt;
              &lt;div class="panel panel-primary" style="height:325px !important;"&gt;
                  &lt;div class="panel-heading"&gt;
                      &lt;h3 class="panel-title" id="panel-title"&gt;BBBBBBBBBBBBBBBB&lt;a href="#panel-title" class="anchorjs-link"&gt;&lt;span class="anchorjs-icon"&gt;&lt;/span&gt;&lt;/a&gt;&lt;/h3&gt;
                  &lt;/div&gt;
                  &lt;div&gt;
                      Content BBBBBBBBBBB
                  &lt;/div&gt;
              &lt;/div&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  
      &lt;div class="row"&gt;
          &lt;div class="col-md-6 portfolio-item"&gt;
              &lt;div class="panel panel-primary" style="height:325px !important;"&gt;
                  &lt;div class="panel-heading"&gt;
                      &lt;h3 class="panel-title" id="panel-title"&gt;CCCCCCCCCCCCCCCCCCCC&lt;a href="#panel-title" class="anchorjs-link"&gt;&lt;span class="anchorjs-icon"&gt;&lt;/span&gt;&lt;/a&gt;&lt;/h3&gt;
                  &lt;/div&gt;
                  &lt;div&gt;
                      Content CCCCCCCCCCC
                  &lt;/div&gt;
              &lt;/div&gt;
          &lt;/div&gt;
          &lt;div class="col-md-6 portfolio-item"&gt;
              &lt;div class="panel panel-primary" style="height:325px !important;"&gt;
                  &lt;div class="panel-heading"&gt;
                      &lt;h3 class="panel-title" id="panel-title"&gt;DDDDDDDDDDDDDDDDDDD&lt;a href="#panel-title" class="anchorjs-link"&gt;&lt;span class="anchorjs-icon"&gt;&lt;/span&gt;&lt;/a&gt;&lt;/h3&gt;
                  &lt;/div&gt;
                  &lt;div&gt;
                      Content DDDDDDDDDDD
                  &lt;/div&gt;
              &lt;/div&gt;
          &lt;/div&gt;
      &lt;/div&gt;
  &lt;/div&gt;
  &lt;!-- /.container --&gt;
  
  &lt;!-- Footer --&gt;
  &lt;footer&gt;
  
  &lt;/footer&gt;
  </code></pre>
  
  <p></p>