media selector

all

Suitable for all devices.

braille

Intended for braille tactile feedback devices.

embossed

Intended for paged braille printers.

handheld

Intended for handheld devices (typically small screen, limited bandwidth).

print

Intended for paged material and for documents viewed on screen in print preview mode.

projection

Intended for projected presentations, for example projectors.

screen

Intended primarily for color computer screens.

speech

Intended for speech synthesizers. Note: CSS2 had a similar media type called 'aural' for this purpose.

tty

Intended for media using a fixed-pitch character grid (such as teletypes, terminals, or portable devices with limited display capabilities).

tv

Intended for television-type devices (low resolution, color, limited-scrollability screens, sound available).

Print CSS

CSS Print Profile deals with paged media.

The book Cascading Style Sheets : Designing for the Web (3rd Edition) by Hakon Wium Lie and Bert Bos was printed using CSS.

See A List Apart: Articles: Printing a Book with CSS: Boom!