CSS | @charset Rule

The @charset rule specifies the character encoding used in the style sheet. The @charset must be the first element in the style sheet and if several @charset rules are defined then the only first one is used. It can not be used in the <style> element where the character set of the HTML page is relevant.
Syntax:

@charset "utf-8";

Property value: This parameter accept single value “charset”.
It is useful when some NON-ASCII characters are used in the content. There are so many ways to define the character encoding of a style sheet. All the browser follow the following methods in the given orders.

  • The value of Unicode byte-order character has to placed at the beginning of the file.
  • The value is given by the charset attribute 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. This method does not used in HTML 5.
  • Assume that the document is UTF-8

Note: Below list describes the correct and incorrect charset encoding:



@charset ‘iso-8859-15’; [Wrong quoting style used, it’s invalid]
@charset “UTF-8”; [More than one space invalid]
@charset “UTF-8”; [Invalid, there is a character (space) before the at-rule]
@charset “UTF-8”; [It Sets the encoding of the style sheet to the Unicode UTF-8]

Example:

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code

<!DOCTYPE html>
<html>
    <head>
        <meta charset="UTF-8">
        <title>CSS @charset Rule</title>
        <style>
            h1 {
                color: green;
            }
        </style>
    </head>
      
    <body>
        <center>
            <h1>Geeksforgeeks</h1>
              
            <p>Learn</p>
            <p>Contribute</p>
            <p>Explore</p>
        <center>
    </body>
</html>                    

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Output:

Supported Browsers: The browser supported by @charset rule are listed below:

  • Google Chrome 2.0
  • Internet Explorer 5.5 above
  • Firefox 1.4
  • Safari 4.0
  • Opera 9.0


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