#color {
    position: absolute;
    left: 50%;
    top: 50%;
    -webkit-transform: translate(-50%, -50%);
    transform: translate(-50%, -50%);
    font-size: 90px;
    font-weight: 900;
    mix-blend-mode: difference;
    cursor: pointer;
}
.credit{
    mix-blend-mode: difference;
    font-weight: 900;
}