A webpage must have the following HTML tags:
<html>…</html>: The open and closing html tags are inserted at the beginning (after your doctype tag) and the end of your webpage. These tags tell your browser that the information contained in this document is HTML.
<body>…</body>: Between the opening and closing body tags is the body of your webpage. This part of your webpage contains all your content (text, pictures, links, lists, headings).