.greet {
    font-size: xx-large;
}

.fade-fast {
    opacity: 0;
    animation: fade-in 1s;
}

.fade-slow {
    opacity: 0;
    animation: fade-in 5s;
}

.fade-medium {
    opacity: 0;
    animation: fade-in 2s;
}

@keyframes fade-in {
    0% {
        opacity: 0;
    }
    35% {
        opacity: 1;
    }
    65% {
        opacity: 1;
    }
    100% {
        opacity: 0;
    }
}

.hide {
    opacity: 0;
}