<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\02212";
}
</style>
</head>
<body>
<p>Minus using Hexa Decimal: −</p>
<p>Minus using HTML Code: −</p>
<p>Minus using HTML Entity: −</p>
<p id="point">Minus using CSS Entity: </p> </body>
</html>