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If you write your document using a character set other than ASCII or ISO-8859-1, you may need to set a @charset rule at the top of your style sheet to indicate the character set used Style sheet writing.
@charset Rules must be written at the beginning of the style sheet, without spaces in front. The value is enclosed in quotes and should be one of the standard character sets.
Let’s see an example
<style> <!-- @charset "iso-8859-1" .......other CSS rules ..... --> </style>
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