@keyframes slideIn {
    0% {
        transform: translateY(100px);
        opacity: 0;
    }
    100% {
        transform: translateY(0);
        opacity: 1;
    }
}

.section {
    opacity: 0; /* Initially hidden */
    transition: opacity 1s ease-in; /* Smooth appearance */
}

.section.visible {
    opacity: 1; /* Visible when class is added */
    animation: slideIn 1s forwards; /* Trigger animation */
}

/* fades in */
@keyframes fadeIn {
    0% {
        opacity: 0;
    }
    100% {
        opacity: 1;
    }
}

.fade-in {
    opacity: 0; /* Initially hidden */
    transition: opacity 1s ease-in; /* Smooth transition */
}

.fade-in.visible {
    opacity: 1; /* Make it visible */
    animation: fadeIn 1s forwards; /* Apply fade-in animation */
}