#wpnp-popup-box {
    position: fixed;
    bottom: 20px;
    right: 20px;
    width: 320px;
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0,0,0,.2);
    padding: 15px;
    z-index: 99999;
    display: none;
}

#wpnp-popup-box h3 {
    margin: 0 0 8px;
}

#wpnp-popup-box button {
    width: 100%;
    padding: 12px;
    border: none;
    color: #fff;
    border-radius: 6px;
    cursor: pointer;
}