title: Can't change font size of a href
body: <p>I want to change the font size of my a href that links back to the top of the page.</p>
  
  <p>My html code:</p>
  
  <pre><code>&lt;a href="#topofpage" class="top"&gt;Return to top of page&lt;/a&gt;
  </code></pre>
  
  <p>My css code:</p>
  
  <pre><code>a.top (
  font-size:40px;
  }
  </code></pre>