<!DOCTYPE html>
<html>
<body>
<span>This renders</span>
<h1>I am a custom element</h1>
<span>This should also render</span>
</body>
</html>
<!DOCTYPE html>
<html>
<body>
<span>This renders</span>
<h1>I am a custom element</h1>
<span>This should also render</span>
</body>
</html>