>
        </div>
      </template>
    </test-fixture>

    <test-fixture id="align-content">
      <template>
        <div class="container layout">
          <div id="c1"></div>
          <div id="c2"></div>
          <div id="c3"></div>
          <div id="c4"></div>
          <div id="c5"></div>
        </div>
      </template>
    </test-fixture>
    <script>
      function positionEquals(node, top, bottom, left, right) {
        var rect = node.getBoundingClientRect();
        return rect.top === top &