title: CSS file not linking in sub-directory
body: <p>Here's my directory structure:</p>
  
  <p>-root</p>
  
  <p>--docs</p>
  
  <p>---doc1.php</p>
  
  <p>--includes</p>
  
  <p>---header.php</p>
  
  <p>---footer.php</p>
  
  <p>---css.css</p>
  
  <p>--index.php</p>
  
  <p>In my header, I link to my CSS file like so:</p>
  
  <pre><code>&lt;link href="includes/styling.css" type="text/css" rel="stylesheet" /&gt;
  </code></pre>
  
  <p>That works for index.php, because it's the correct path (root/includes/css.css).</p>
  
  <p>But for doc1.php, it's not the right path. (root/docs/includes/css.css).</p>
  
  <p>How do I fix this while keeping one header.php file with that line of code in it? Is there a way to force the path to start in the root directory?</p>