title: Rewriting only when a file doesn't exist
body: <p>I've got a .htaccess file as it follows:</p>
  
  <pre><code>Options +FollowSymLinks
  RewriteEngine On
  RewriteRule ^(.*)$ index.php [NC,L]
  </code></pre>
  
  <p>I've got this file in my web directory. Is there any way to force this rule to stop rewriting if there's a file?</p>
  
  <p>For example: I've got a css/style.css file but the server returns 404 because the mod_rewrite rule works. If I turn the mod_rewrite off, the file is found.</p>