title: What's the condition for a div element to expand?
body: <p>I have one div element where I have all articles. The articles itself are div-elements.</p>
  
  <pre><code>&lt;div id='articleContainer'&gt;
      &lt;div class='article'&gt;&lt;/div&gt;
      &lt;div class='article'&gt;&lt;/div&gt;
      &lt;div class='article'&gt;&lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>Here is the css for aritcleContainer</p>
  
  <pre><code>#articleContainer{
      position: relative;
      float:left;
      width: 600px;
      min-height: 600px;
      padding: 50px;
  }
  </code></pre>
  
  <p>What's the least condition for it to expand as I add new articles? This example works but I just want to know the condition for it to expand for itself. There are other examples that do not expand for itself. Where I don't have a clue at all.</p>