blank line before @charset
If a @charset declaration is not on the first line of the file, the encoding declaration will not be recognised.
This test is only valid if the user agent recognises the @charset rule.
The HTML page is served as UTF-8. The CSS stylesheet contains a selector that only matches the class name in the HTML if it is read as ISO 8859-15. There is an @charset rule at the start of the style sheet that can set the encoding to ISO 8859-15, but it is incorrectly formed, and so should be ignored. If the previously mentioned selector matches, ie. the @charset rule has not been ignored, the test fails.
Text as read from the style sheet: (if blank, the style sheet hasn't been read at all)