1- intro html
<!DOCTYPE html> <!-- What type of document type? Html of course! -->
<html> <!-- Our html element holds all the html we'll need -->
<head> <!-- the Head holds the meta information such as the title -->
<title> <!-- What shows up in the browser's tab name -->
Title
</title>
</head>
<body> <!-- ALL our visible html code goes here -->
</body>
</html>