<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\00232";
}
</style>
</head>
<body>
<p>Uppercase Y Macron using Hexa Decimal: Ȳ</p>
<p>Uppercase Y Macron using HTML Code: Ȳ</p>
<p id="point">Uppercase Y Macron using CSS Entity: </p>
</body>
</html>