This is Standard Format of writing HTML Code.
<!DOCTYPE html>
<html lang="en"> <!-- Root Tag-->
<head> <!-- Store Meta Data-->
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>My First HTML Page</title> <!-- Title Tag-->
</head>
<body> <!-- Actual Data Display on Web Page-->
<p>Hello World! by rsportflio.com</p>
</body>
</html>