Both the head and body use pieces of code called tags. Tags style text, link files, embedded graphics, inset tables, and create forms. Tags can be all capital letters or all lower case or a mix. Some tags can be used by themselves Other tags must be used together. Some tags require an opening tag and an ending tag.
Some tags require additional attribute information supplied from the developer.
HTML Document . The first part of your HTML document should be the Head Section. The Head Section provides information about the URL as well as its relationship with other pages at your site. The only element visible to the user is the title of the page. The title tag should be a short description of the page.