HTML 5 is the new standard for HTML, XHTML, and the HTML DOM.Some rules of HTML 5 are the Following
Some new features include Element Tags that support
Benefits of HTML 5 for Sites and Devices
Using the Content specific Elements you can create search engine friendly websites that can be easily crawled, this is great for websites that are primarily based on flash. You flash content can now be indexed! The new Element Tags are great for SEO.
Devices that are using updated browsers that support HTML 5 will load faster and be able to view Flash without downloading any Flash software.
what is html 5
html 5 standard