body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f4f4f4;
    margin: 0;
}

header {
    text-align: center;
    padding: 40px;
}

.gallery {
    display: flex;
    justify-content: center;
    gap: 40px;
    flex-wrap: wrap;
    padding: 40px;
}

.card {
    width: 320px;
    background: white;
    padding: 12px;
    box-shadow: 0 15px 30px rgba(0,0,0,0.15);
}

.card img {
    width: 100%;
    height: auto;
    display: block;
}