This section describes Cascading Style Sheets (CSS) at-rules.
At-rules start with an at-keyword (an
@ character) followed immediately by an identifier, and consist of everything up to and including the next semicolon (
;) or the next declaration block, whichever comes first.
||pecifies the character encoding of an external style sheet.|
||Enables the use of downloadable web fonts.|
||Imports an external style sheet.|
||Specifies the values for the animating properties at various points during the animation.|
||Sets the media types for a set of rules in a style sheet.|
||Defines the dimensions, orientation, and margins of a page box for printing environments.|