.card5{
    border: 1px solid #ccc;
    padding: 16px;
    text-align: center;
    cursor: pointer;
    margin: 10px;
    display: inline-block;
}
.preview {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    padding: 20px;
    background-color: white;
    border: 2px solid #000;
}
.preview img {
    max-width: 100%;
    max-height: 100%;
}
.overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}