body, html {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
    background: #f0f0f0;
}

.gallery {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    gap: 20px;
}

.gallery img {
    width: 80%;
    max-width: 600px;
    opacity: 0;
    transform: translateY(50px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.gallery img.show {
    opacity: 1;
    transform: translateY(0);
}