CSS At-Rules

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4/8/2010

This topic summarizes the Cascading Style Sheet "at rules".

Description

Structure	Possible Values	Windows Mobile	CSS Mobile	WAP CSS	CSS1	CSS2	CSS3	Comments
@charset		?	Yes	Yes	No	Yes	No	Sets the character set to be used.
@import		Yes	Yes	Yes	No	Yes	No	Imports style rules from other style sheets.
	<uri>	Yes	Yes	Yes	No	Yes	No
	url(uri)	Yes	Yes	Yes	No	Yes	No
	(<uri> \| url(uri)) <media type>	Yes	No	No	No	Yes	No
media types		Yes	Yes	Yes	No	Yes	No	CSS2 requires to support one or more media types.
	all	Yes	Yes	Yes	No	Yes	No
	aural	No	No	No	No	No	No
	braille	No	No	No	No	No	No
	embossed	No	No	No	No	No	No
	handheld	Yes	Yes	Yes	No	Yes	No
	print	No	No	No	No	No	No
	projection	No	No	No	No	No	No
	screen	Yes	No	No	No	Yes	No
	tty	No	No	No	No	No	No
	tv	No	No	No	No	No	No
@media		Yes	Yes	Yes	No	Yes	No	This specifies which style rules should be used with each of the supported media types.
	all	Yes	Yes	Yes	No	Yes	No
	aural	No	No	No	No	No	No
	braille	No	No	No	No	No	No
	embossed	No	No	No	No	No	No
	handheld	Yes	Yes	Yes	No	Yes	No
	print	No	No	No	No	No	No
	projection	No	No	No	No	No	No
	screen	Yes	No	No	No	Yes	No
	tty	No	No	No	No	No	No
	tv	No	No	No	No	No	No