title: Setting overflow:auto, yet not horizontal scrollbar is displayed
body: <p>Why doesn't div with id "shouldHaveScrollBar" doesn't display a horizontal scrollbar:</p>
  
  <pre><code>&lt;div style="overflow:hidden; 
              width: 300px; height: 300px; background-color:blue; color:white"&gt;
  
      &lt;div&gt;Some stuff&lt;/div&gt;
      &lt;div&gt;Some other stuff"&lt;/div&gt;
      &lt;div id="shouldHaveScrollBar" 
           style="background-color:grey; 
                  width: 100%; height: 100%; overflow-x:auto"&gt;
        &lt;input type="text" size=200"&gt;
      &lt;/div&gt; 
  &lt;/div&gt;
  </code></pre>
  
  <p>Thank you,</p>