rel="import">

  <style>
    #animate-me {
      background-color: lime;
      position: fixed;
      top: 100px;
      width: 100%;
      height: 100%;
    }
  </style>

</head>
<body unresolved>

  <div id="animate-me" hidden></div>

  <select id="sel" onchange="setup();">
    <option value="core-transition-fade" selected>core-transition-fade</option>
    <option value="core-transition-center">core-transition-center</option>
    <option value="core-transition-top">core-transition-top</option>
    <option 