title: Accelerated mobile pages link to css file
body: <p>I am trying to link to css file :</p>
  
  <pre><code>&lt;link href="/semanticui/semantic.css" rel="stylesheet" /&gt;
  </code></pre>
  
  <p>Opening chrome in <code>#development=1</code> mode to test my page for amp. I am getting this error : </p>
  
  <pre><code>The attribute 'href' in tag 'link rel=stylesheet for fonts' is set to the invalid value '/semanticui/semantic.css'.
  </code></pre>