Web platform features explorer - May 2013 release notes

New in Chrome

The following features are now available in Chrome:

ch unit: The ch CSS length unit is a font-relative length based on the width of the zero (0) character.
OES_texture_half_float WebGL extension: The OES_texture_half_float extension for WebGL 1.0 contexts adds texture formats with 16-bit (also known as half float) and 32-bit floating-point components.
:scope (pseudo-class): The :scope CSS pseudo-class matches the scoping root, for instance the element that querySelector() is called on, or the root of a DOM subtree specified with @scope.

The following features are now available in Chrome Android:

ch unit: The ch CSS length unit is a font-relative length based on the width of the zero (0) character.
OES_texture_half_float WebGL extension: The OES_texture_half_float extension for WebGL 1.0 contexts adds texture formats with 16-bit (also known as half float) and 32-bit floating-point components.
:scope (pseudo-class): The :scope CSS pseudo-class matches the scoping root, for instance the element that querySelector() is called on, or the root of a DOM subtree specified with @scope.

The following features are now available in Firefox:

<main>: The <main> element represents the dominant content of a document. It is commonly used together with <header> and <footer>.

The following features are now available in Firefox for Android:

<main>: The <main> element represents the dominant content of a document. It is commonly used together with <header> and <footer>.