<!DOCTYPE html>
<html>
<head>
    <title>SVG custom element</title>
    <link rel="author" title="Aleksei Yu. Semenov" href="mailto:a.semenov@unipro.ru">
</head>
<body>
    <svg height="100" width="100">
        <x-svg-element id="x-svg-element"></x-element>
    </svg>
</body>
</html>