.popup-banner {
    position: fixed;
    bottom: 0;
    right: 0;
    width: 300px;
    background-color: #fff;
    border: 1px solid #ccc;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    display: none;
    z-index: 1000;
}

.popup-content {
    padding: 20px;
    text-align: center;
}

.close-btn {
    position: absolute;
    top: 10px;
    right: 10px;
    cursor: pointer;
    font-size: 20px;
}