size {
  height: -moz-available;
  height: -webkit-fill-available;
  height: stretch;
}
.container.column canvas {
  display: block;
  width: 100%;
}
.container.row canvas {
  display: block;
  height: 100%;
}
</style>

<div id="tests"></div>
<div id="log"></div>

<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/resources/check-layout-th.js"></script>
<script>
let canvas = document.createElement("canvas");
canvas.width = canvas.height = 