Definition and Usage
The @charset CSS at-rule specifies the character encoding used in the style sheet. It must be the first element in the style sheet and not be preceded by any character; as it is not a nested statement, it cannot be used inside conditional group at-rules. If several @charset at-rules are defined, only the first one is used, and it cannot be used inside a style attribute on an HTML element or inside the <style> element where the character set of the HTML page is relevant.
This at-rule is useful when using non-ASCII characters in some CSS properties, like content.
As there are several ways to define the character encoding of a style sheet, the browser will try the following methods in the following order (and stop as soon as one yields a result) :
- The value of the Unicode byte-order character placed at the beginning of the file.
- The value given by the charset attribute of the Content-Type: HTTP header or the equivalent in the protocol used to serve the style sheet.
- The @charset CSS at-rule.
- Use the character encoding defined by the referring document: the charset attribute of the <link> element. This method is obsoleted in HTML5 and must not be used.
- Assume that the document is UTF-8
- Is a
<string>denoting the character encoding to be used. It must be the name of a web-safe character encoding defined in the IANA-registry. If several names are associated with an encoding, only the one marked with preferred must be used.
@charset "UTF-8"; /* Set the encoding of the style sheet to Unicode UTF-8 */ @charset 'iso-8859-15'; /* Set the encoding of the style sheet to Latin-9 (Western European languages, with euro sign) */ @charset "UTF-8"; /* Invalid, there is a character (a space) before the at-rule */ @charset UTF-8; /* Invalid, without ' or ", the charset is not a CSS <string> */
|Feature||Chrome||Firefox (Gecko)||Internet Explorer||Opera||Safari|
|Basic support||2.0||1.5 (1.8)||5.5 [**]||9||4|
|Feature||Android||Firefox Mobile (Gecko)||IE Mobile||Opera Mobile||Safari Mobile|
|Basic support||2.1||1.0 (1.8)||5.5 [**]||10.0||4|