body {
    background-color: black;
    color: white;
}
.fade-in {
    animation: fadeIn 0.7s ease-out forwards;
    opacity: 0;
    transform: translateY(20px);
}
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}