,
                                              lch(50% 100% 220deg),
                                              lch(50% 100% 290deg),
                                              lch(50% 100% 360deg));
        }

        div.c {
            background-image: linear-gradient(to right in lch increasing hue,
                                              lch(50% 100% 0deg),
                                              lch(50% 100% 90deg),
                                              lch(50% 100% 180deg),