http vs. bom
Test passes if there is a green rectangle below.
This test is only valid if the user agent recognises the HTTP declarations and BOM function.
Assertion: An HTTP encoding declaration for a stylesheet takes precedence over a UTF-8 signature.
Notes:
The HTML page is served as ISO 8859-1. The CSS contains a UTF-8 signature at the beginning, but the HTTP header says ISO 8859-1.