@keyframes fade {
    from {opacity: .4}
    to {opacity: 1}
}

@keyframes fadeFromBlack {
    from {opacity: 0}
    to {opacity: 1}
}


.fade {
    animation-name: fade;
    animation-duration: 1.5s;
}

.fade-slow {
    animation-name: fadeFromBlack;
    animation-duration: 3s;
}