<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\00044";
}
</style>
</head>
<body>
<p>Uppercase D using Hexa Decimal: D</p>
<p>Uppercase D using HTML Code: D</p>
<p>Uppercase D using HTML Entity: D</p>
<p id="point">Uppercase D using CSS Entity: </p>
</body>
</html>