title: how to set a dynamic (streamed) image as background to a div tag
body: <p>how to set a dynamic image as background to a div tag, I an using primefaces with spark layout.</p>
  <pre><code>    &lt;div class=&quot;Container100 &quot; id=&quot;spark-highlight&quot; 
       style=&quot;padding:10rem 0px; background-image: ...&quot;&gt;
  </code></pre>