<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\026A0";
}
</style>
</head>
<body>
<p>Warning Sign using Hexa Decimal: ⚠</p>
<p>Warning Sign using HTML Code: ⚠</p>
<p id="point">Warning Sign using CSS Entity: </p>
</body>
</html>