<!DOCTYPE html>
<html>

<div id="host1"><div>Host Child</div></div>

<script>
var shadowRoot1 = host1.createShadowRoot();
shadowRoot1.innerHTML = '<div id="host2">Oldest ShadowRoot Child</div>';

var shadowRoot2 = host1.createShadowRoot();
shadowRoot2.innerHTML = '<shadow></shadow><content></content><shadow><div>Should not be selected</div></shadow>';

var shadowRoot3 = host1.createShadowRoot();
shadowRoot3.innerHTML = '<div id="host4"><shadow></shadow><shadow><div>Should not be selected</div></shadow><span>Not rendered (1)</span><shadow><span>Not rendered (2)</span></shadow></div>';

var host4 = shadowRoot3.getElementById('host4');
var shadowRoot4 = host4.createShadowRoot();

shadowRoot4.innerHTML = '<content select="div"></content>';
</script>

</html>