The DOCTYPE empty tag is used to indicate the version of HTML used. It is good practice for HTML.
The HTML container tag tells the browser where the HTML code begins and ends.
The HEAD container tag contains information about the document, such as its creation date and author.
The TITLE container tag lists the title of the document to appear in the browser title bar. The BODY container tag encloses the text, graphics, hot links, and other content to be displayed by the browser.