<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\00041";
}
</style>
</head>
<body>
<p>Uppercase A using Hexa Decimal: A</p>
<p>Uppercase A using HTML Code: A</p>
<p>Uppercase A using HTML Entity: A</p>
<p id="point">Uppercase A using CSS Entity: </p>
</body>
</html>