<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\021F3";
}
</style>
</head>
<body>
<p>Up Down White Arrow using Hexa Decimal: ⇳</p>
<p>Up Down White Arrow using HTML Code: ⇳</p>
<p id="point">Up Down White Arrow using CSS Entity: </p>
</body>
</html>