The embedded CSS defines:

• body { color: black; } -> good
• p { font-size: whatever; } -> unknown value, checker should raise a warning under STYLE_SHEET_USE
• ul { word-spacing: 42things; } -> unknown unit, checker should raise a warning under STYLE_SHEET_USE
• li { yeepee: 20px; } -> unknown property, checker should WARN about the property and ignore the value

The whole thing should not trigger any FAIL, but raise two WARN.