The
<header> element represents a container for introductory content or a set
of navigational links.
A <header>
element typically contains:
one or more heading elements (<h1> -
<h6>)
logo or icon
authorship information
You can have
several <header> elements in one document.
The
<footer> tag defines a footer for a document or section.
A <footer>
element should contain information about its containing element.
A <footer>
element typically contains:
authorship information
copyright information
contact information
sitemap
back to top links
related documents
You can have
several <footer> elements in one document.
The <body>
tag defines the document's body. The <body> element contains all the
contents of an HTML document, such as text, hyperlinks, images, tables, lists,
etc.
The <aside>
tag defines some content aside from the content it is placed in. The aside
content should be related to the surrounding content.