#overlay {
    /* Initially hide the overlay */
    display: none;
    /* Position it fixed to cover the entire viewport */
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7); /* Dark background with opacity */
    z-index: 10; /* Ensure it's above other content */
    /* Center the popup content */
    display: flex;
    justify-content: center;
    align-items: center;
}

#popup {
    background-color: rgb(116, 157, 232);
    padding: 20px;
    border-radius: 5px;
    text-align: center;
}