@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
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
charsetattribute of the
Content-Type:HTTP header or the equivalent in the protocol used to serve the style sheet.
- Use the character encoding defined by the referring document: the
charsetattribute of the
<link>element. This method is obsoleted in HTML5 and must not be used.
- Assume that the document is UTF-8
@charset "UTF-8"; @charset "iso-8859-15";
- 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, and must be double-quoted, following exactly one space character (U+0020), and immediately terminated with a semicolon. 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'; /* Invalid, wrong quoting style used */ @charset "UTF-8"; /* Invalid, more than one space */ @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
|CSS Level 2 (Revision 1)
The definition of '@charset' in that specification.
|Feature||Android webview||Chrome for Android||Edge mobile||Firefox for Android||Opera Android||iOS Safari||Samsung Internet|
1. Firefox 1 supported an invalid syntax where the character encoding is not between single or double quotes.
2. From Internet Explorer 5.5 to IE 7 (inclusive), Internet Explorer supported an invalid syntax where the character encoding is not between single or double quotes.