<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\00024";
}
</style>
</head>
<body>
<p>Dollar Sign using Hexa Decimal: $</p>
<p>Dollar Sign using HTML Code: $</p>
<p>Dollar Sign using HTML Entity: $</p>
<p id="point">Dollar Sign using CSS Entity: </p>
</body>
</html>