CSS 2D Transforms
The CSS 2D Transform spec allows arbitrary HTML content to be scaled, rotated, translated or skewed in the same manner than SVG and Canvas allows 2D transforms on arbitrary 2D graphics objects. The syntax for CSS 2D transforms uses similar syntax to SVG's 'transform' attribute.
The spec is at:
WebKit supports both 2D and 3D CSS Transforms. Firefox 3.5 apparently supports 2D transforms but does not yet support 3D transforms.