title: How can I disable an attribute on a descendant selector?
body: <p>I want to disable the border on my last anchor tag in my nav bar. I can get this working okay on other elements with only single selectors. How can I get this to work on a descendant selector?</p>
  
  <p><div class="snippet" data-lang="js" data-hide="false" data-console="true" data-babel="false">
  <div class="snippet-code">
  <pre class="snippet-code-css lang-css prettyprint-override"><code>nav a {
    display: block;
    float: left;
    width: 200px;
    text-decoration: none;
    color: white;
    border-right: 1px solid white;
    background-color: purple;
    padding: 0.2em 0.6em;
  }
  
  nav a:last-child {
    border-right: none;
  }</code></pre>
  <pre class="snippet-code-html lang-html prettyprint-override"><code>&lt;nav&gt;
    &lt;ul&gt;
      &lt;li&gt;&lt;a href="#"&gt;Home&lt;/a&gt;&lt;/li&gt;
      &lt;li&gt;&lt;a href="#"&gt;Reviews&lt;/a&gt;&lt;/li&gt;
      &lt;li&gt;&lt;a href="#"&gt;Photos&lt;/a&gt;&lt;/li&gt;
      &lt;li&gt;&lt;a href="#"&gt;Music links&lt;/a&gt;&lt;/li&gt;
    &lt;/ul&gt;
  &lt;/nav&gt;</code></pre>
  </div>
  </div>
  </p>