.fade-in, .slide-up, .slide-left, .slide-right {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.slide-up {
    transform: translateY(60px);
}

.slide-left {
    transform: translateX(-60px);
}

.slide-right {
    transform: translateX(60px);
}

.fade-in.animate,
.slide-up.animate,
.slide-left.animate,
.slide-right.animate {
    opacity: 1;
    transform: translate(0, 0);
}