[HTML5] Review : the good parts

I am recently involving time and effort in mastering front-end skill, and I would say front-end is evoluting so fast , new framework and standard come up every few months. Sound like it is so hard to catch and to become a front-end master, but it is not true, likelihood the animal kingdom, it is diverse, there is so much to study about different species, or different behavior of individual of one species. But there is couple of perpetual core in animal, like cell. And I can say that HTML, CSS, Javascript and HTTP request are the cell of website.
Content:
New Doctype
The Figure Element
No More Types for Scripts and Links
Flexibility with “Quotation marks”
Content Editable
Mark Element
Audio Support
Video Support
Local Storage
[input] Email type
[input] Placeholders Attribute
[input] Required Attribute
[input] Autofocus Attribute
[input] Autofocus Attribute
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