The width media feature describes the width of the targeted display area of the output device. For continuous media, this is the width of the viewport including the size of a rendered scroll bar (if any). For paged media, this is the width of the page box.


A specified <length> cannot be negative.

]]> The height media feature describes the height of the targeted display area of the output device. For continuous media, this is the height of the viewport including the size of a rendered scroll bar (if any). For paged media, this is the height of the page box.


A specified <length> cannot be negative.

]]> The device-width media feature describes the width of the rendering surface of the output device. For continuous media, this is the width of the screen. For paged media, this is the width of the page sheet size.


A specified <length> cannot be negative.

]]> The device-height media feature describes the height of the rendering surface of the output device. For continuous media, this is the height of the screen. For paged media, this is the height of the page sheet size.


A specified <length> cannot be negative.

]]> orientation media feature is portrait when the value of the media feature is greater than or equal to the value of the media feature. Otherwise orientation is landscape. ]]> aspect-ratio media feature is defined as the ratio of the value of the media feature to the value of the media feature. ]]> device-aspect-ratio media feature is defined as the ratio of the value of the media feature to the value of the media feature. ]]> The color media feature describes the number of bits per color component of the output device. If the device is not a color device, the value is zero.


A specified <integer> cannot be negative.


If different color components are represented by different number of bits, the smallest number is used.


In a device with indexed colors, the minimum number of bits per color component in the lookup table is used.

]]> The color-index media feature describes the number of entries in the color lookup table of the output device. If the device does not use a color lookup table, the value is zero.


A specified <integer> cannot be negative.

]]> The monochrome media feature describes the number of bits per pixel in a monochrome frame buffer. If the device is not a monochrome device, the output device value will be 0.


A specified <integer> cannot be negative.

]]> The resolution media feature describes the resolution of the output device, i.e. the density of the pixels. When querying devices with non-square pixels, in min-resolution queries the least-dense dimension must be compared to the specified value and in max-resolution queries the most-dense dimensions must be compared instead. A resolution (without a "min-" or "max-" prefix) query never matches a device with non-square pixels.

For printers, this corresponds to the screening resolution (the resolution for printing dots of arbitrary color).

]]> The scan media feature describes the scanning process of "tv" output devices.

]]> The grid media feature is used to query whether the output device is grid or bitmap. If the output device is grid-based (e.g., a "tty" terminal, or a phone display with only one fixed font), the value will be 1. Otherwise, the value will be 0.

Only 0 and 1 are valid values. (This includes -0.) Thus everything else creates a malformed media query.

]]> Gives the number of device pixels per CSS pixel.

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