inheritance from HTML encoding
The user agent applies the encoding of the HTML file to a css stylesheet whose encoding is not otherwise declared.
The HTML page is served as ISO 8859-15 and has a class name ýäè. This only matches the sequence of bytes in the selector of the CSS file if the selector is read as ISO 8859-15. The CSS file has no encoding set nor BOM.
Text as read from the style sheet: (if blank, the style sheet hasn't been read at all)