deferred-styles.html

<noscript id="deferred-styles">
  <link rel="stylesheet" type="text/css" href="small.css"/>
</noscript>
<script>
  var loadDeferredStyles = function() {
    var addStylesNode = document.getElementById("deferred-styles");
    var replacement = document.createElement("div");
    replacement.innerHTML = addStylesNode.textContent;
    document.body.appendChild(replacement);
    addStylesNode.parentElement.removeChild(addStylesNode);
  };
  var raf = window.requestAnimationFrame || window.mozRequestAnimationFrame ||
      window.webkitRequestAnimationFrame || window.msRequestAnimationFrame;
  if (raf) raf(function() { window.setTimeout(loadDeferredStyles, 0); });
  else window.addEventListener('load', loadDeferredStyles);
</script>