March 2016 web platform update

Newly available on the web platform

Newly available

• Classes: Classes are an object-oriented syntax for JavaScript prototypes. Learn more.

• <picture>: The <picture> element is used for art direction in responsive images, where a different image is displayed based on the <source> element. Learn more.

• unset: The unset keyword resets any CSS property, removing any values previously set by the author, user, or browser. Inherited properties (like color) reset to the parent element's computed value. Non-inherited properties (like display) reset to the specified initial value (inline). Learn more.