title: Add "Watermark" effect with CSS?
body: <p>I have an image in a div. I need to add a watermark effect, or basically another image, overtop the image the div. How can I do this with css? </p>
  
  <p>Example code:</p>
  
  <pre><code>&lt;div id="image"&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>css:</p>
  
  <pre><code>#image {
     background:url(images/images.png) no-repeat;
  }
  </code></pre>