/* Popup container (hidden by default) */
.popup {
    display: none; /* Hidden by default */
    position: fixed;
    z-index: 1;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5); /* Black background with transparency */
}

/* Popup content */
.popup-content {
    background-color: #fff;
    margin: 15% auto;
    padding: 20px;
    border: 1px solid #888;
    width: 50%;
    border-radius: 5px;
    box-shadow: 0px 4px 6px rgba(0, 0, 0, 0.2);
}

/* Close button */
.close {
    color: #aaa;
    float: right;
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
}

.close:hover,
.close:focus {
    color: black;
    text-decoration: none;
    cursor: pointer;
}