bf8e1, #f69d3c)");
test_invalid_value("background", "conic-gradient(from calc(sign(50%) * 1rad) at 10% 50%, #e66465, #9198e5)");
test_invalid_value("filter", "hue-rotate(calc(sign(50%) * 1deg))");
test_invalid_value("offset-rotate", "calc(sign(50%) * 1deg)");
test_invalid_value("offset-path", "ray(calc(sign(50%) * 1deg))");
test_invalid_value("color", "hsl(calc(sign(50%) * 1deg) 82% 43%)");
test_invalid_value("transform", "rotate(calc(sign(50%) * 1deg))");
test_invalid_value("animation-duration", "calc(sign