title: How to make child div expand to parent div
body: <p>Hi i am having trouble trying to get my child div expand to the height of the parent div that it is inside of.</p>
  
  <p>Here is the css for the parent div</p>
  
  <pre><code>#wrapper #content {
      border: 1px ridge #999;
      height: auto;
      min-height: 1000px;
      width: 1100px;
      margin-top: 40px;
      margin-right: auto;
      margin-bottom: 30px;
      margin-left: auto;
      float: left;
  }
  </code></pre>
  
  <p>And here is the css for the child div</p>
  
  <pre><code>.tab_container {
      clear: both;
      width: 100%;
      border-right: 1px ridge #999;
      margin-bottom: 20px;
      height: 100%;
  }
  </code></pre>
  
  <p>Any ideas what i can do? </p>