title: change icon of a List with a Click with CSS
body: <p>i have a NavList for my tabmenu like this:</p>
  
  <pre><code>&lt;ul&gt;
    &lt;li&gt;&lt;a href="#1"&gt;&lt;span&gt;&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
    &lt;li&gt;&lt;a href="#2"&gt;&lt;span&gt;&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
    &lt;li&gt;&lt;a href="#3"&gt;&lt;span&gt;&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
    &lt;li&gt;&lt;a href="#4"&gt;&lt;span&gt;&lt;/span&gt;&lt;/a&gt;&lt;/li&gt;
  &lt;/ul&gt;
  </code></pre>
  
  <p>Now in the css i take a background-img to the empty span, to have an icon in my menu. How can i change the icon when i click on the link?</p>
  
  <p>a:active is only for the click. I need something like a:target. Is this possible?</p>
  
  <p>Thanks a lot!</p>