<!DOCTYPE html>
<html lang="en-US">
<head>
<style>
#point:after{
content:"\00305";
}
</style>
</head>
<body>
<p>Overline using Hexa Decimal: ̅</p>
<p>Overline using HTML Code: ̅</p>
<p id="point">Overline using CSS Entity: </p>
</body>
</html>