HTML 5 Extra Features
History
HTML5 is a new and powerful version of HTML. After creating XHTML 1.0, the World Wide Web Consortium(http://www.w3.org/ ) began developing XHTML 2.0, but it never solved the problems of working with new technologies, such as mobile devices. An organization was formed to solve these problems: Web Hypertext Application Technology Working Group with the acronym WHATW (http://www.whatwg.org/). The World Wide Web Consortium began to support WHATW in their development of HTML5 and abandoned further development of XHTML.
Current Status
HTML5 is still in transition and not completely supported, even by the newest browsers: Mozilla Firefox 4.0 + Google Chrome 11.0+ Apple Safari 5.0+ Internet Explorer 9.0+ Opera 11.0+
The layout tags ARE supported by these browsers, but many of the new form input tags are not. Google Chrome does seems to support many, but not all of the form tags.
CSS Support
HTML5 layout tags are recognized as divs. However, you will need to add the following to your css style sheet to be sure that the HTML5 tags are considered "block".
header, section, footer, aside, nav, article, figure {
display: block;
}
Forms and Layout
Visit the Forms and Layout pages for additional information.
Additional links and information can be found at