ers/demo-snippet.html">
  <link rel="import" href="../../iron-demo-helpers/demo-pages-shared-styles.html">

  <style is="custom-style" include="demo-pages-shared-styles">
    demo-snippet {
      --demo-snippet-code: {
        max-height: 250px;
      }
    }
  </style>

</head>

<body unresolved class="centered">

  <h3>An element with <code>IronOverlayBehavior</code> can be opened, closed, toggled.</h3>
  <demo-snippet>
    <template>
      <button onclick="plain.open()">Plain overlay</button>
      <simp