title: C# get css property
body: <p>I have an element in c#:  </p>
  
  <pre><code>HtmlElement element = webBrowser1.Document.GetElementById("idName");
  </code></pre>
  
  <p>The site has an element  </p>
  
  <pre><code>&lt;ul id="idName" class="className"&gt;
  </code></pre>
  
  <p>In the css for this class is registered property of the <code>background: url ('url')</code>. How do I know this property from c#?</p>