<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\00023";
}
</style>
</head>
<body>
<p>Number Sign using Hexa Decimal: #</p>
<p>Number Sign using HTML Code: #</p>
<p>Number Sign using HTML Entity: #</p>
<p id="point">Number Sign using CSS Entity: </p> </body>
</html>