{@} CSS At-Rules | CSS: Presentation Layer

Standards Based Development

At-Rules provide instructions/directives to the css parser.

• charset
• font-face
• import
• media
• namespace
• page

charset specifies the character encoding of an external style sheet. charset must be followed by a quoted string value and a semicolon, where the string must contain a valid encoding name from the iana registry.

charset rule must be the very first thing in a style sheet; the only exemption being that a Unicode bom may precede it.