The < !DOCTYPE html > declaration defines that this document is an HTML5 document
The < html > element is the root element of an HTML page
The < head > element contains meta information about the HTML page
The < title > element specifies a title for the HTML page (which is shown in the browser's title bar or in the page's tab)
The < body > element defines the document's body, and is a container for all the visible contents, such as headings, paragraphs, images, hyperlinks, tables, lists, etc.
The < h1 > element defines a large heading
The < p > element defines a paragraph