<html>
<head>
<style type="text/css">
#thumbHorizontal {
    -webkit-appearance: sliderthumb-horizontal;
    display: inline-block;
    width: 20px;
    height: 20px;
}
#thumbVertical {
    -webkit-appearance: sliderthumb-vertical;
    display: inline-block;
    width: 20px;
    height: 20px;
}
</style>
</head>
<body>
<!-- There should be a horizontal slider thumb and a vertical slider thumb. -->
<span id="thumbHorizontal"></span><br>
<span id="thumbVertical"></span>
</body>
</html>