monkeygg2.github.io/games/progress-knight-quest/css/currencies.css

@keyframes currency-rainbow{
    0% {
        color: #FF4040;
    }
    16% {
        color: #FFFF40;
    }
    33% {
        color: #40FF40;
    }
    50% {
        color: #40FFFF;
    }
    66% {
        color: #4040FF;
    }
    83% {
        color: #FF40FF;
    }
    100% {
        color: #FF4040;
    }
}

.currency-bold{
    font-weight: bold;
}

.currency-shadow{
    font-weight: bold;
    text-shadow: 0 0 5px currentColor;
}

.currency-shadow-rainbow{
    font-weight: bold;
    text-shadow: 0 0 5px currentColor;
    animation: currency-rainbow 12s infinite;
}