title: CSS selector for other than the first child and last child
body: <p>I am making a very advanced website. My question: Is it possible to select all the other children except for the <code>:first-child</code> and the <code>:last-child</code>? I know there is a <code>:not()</code> selector but it doesn't work with more than one not in the parentheses. This is what I have:</p>
  
  <pre><code>#navigation ul li:not(:first-child, :last-child) {
      background: url(images/UISegmentBarButtonmiddle@2x.png);
      background-size: contain;
  }
  </code></pre>