<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\0005B";
}
</style>
</head>
<body>
<p>Left Bracket using Hexa Decimal: [</p>
<p>Left Bracket using HTML Code: [</p>
<p>Left Bracket using HTML Entity: [</p>
<p id="point">Left Bracket using CSS Entity: </p> </body>
</html>