<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
<style>
body {
margin: 0;
width: 100vw;
height: 100vh;
}
</style>
</head>
<body contextmenu="testmenu">
<menu type="context" id="testmenu">
<menuitem label="Test Context Menu Click" id="menuitem"></menuitem>
<hr>
</menu>
</body>
</html>