elements/viewer-error-screen/viewer-error-screen.html

<polymer-element name="viewer-error-screen" attributes="text">
<template>
  <link rel="stylesheet" href="viewer-error-screen.css">
  <div id="load-failed-message">{{text}}</div>
</template>
<script>
  Polymer('viewer-error-screen', {});
</script>
</polymer-element>