<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\0220E";
}
</style>
</head>
<body>
<p>End Of Proof using Hexa Decimal: ∎</p>
<p>End Of Proof using HTML Code: ∎</p>
<p id="point">End Of Proof using CSS Entity: </p>
</body>
</html>