There are four basic structural tags that are required for HTML documents. These include:
The <!Doctype> tag defines the version of HTML being
used.
Each HTML document begins with <HTML> and ends with
</HTML>.
This defines the file as an HTML document.
Directly following the opening <html> tag is the <head>
section. It also requires a closing </head> tag. The head section
contains items such as the <title> and other general information
about the document. At a minimum the <head> section should
contain a <title>...</title> tags, which is the text that
is displayed in the titlebar of the browser window. The <head>
section usually also contains various <meta> tags which describe
miscellaneous pieces of information such as the content-type, generator
or author.
The <body> section contains all of the content that
is actually rendered in the browser. Like the other two structural tags,
it must have a closing </body> tag. Any text, graphics, or
other elements that you want displayed in the browser are referenced here.
To see examples of these tags, use the View Source option in your browser for this page. Comments are inserted to help you see the relevent structural tags.