HTML 5 defines new page structure elements including <nav> for navigation, <aside> for content aside from the page's main content in <article>, <header> and <footer> contain introductory or closing page elements like logos or copyright information, and <section> divides the main content into separate sections.

1. HTML 5 page structure
<Nav>
Contains navigational sections of
the site
<aside>
<article>
Web page main content
<header>
Contains brandings e.g. logo
<section>
Divided section of main
content
<section>
Divided section of main
content
<footer>
Information about copyright, privacy , policy and terms of use