#custom-cart-popup {
    position: fixed;
    top: 20px;
    right: 20px;
    background: #4CAF50;
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.2);
    z-index: 1000;
    font-size: 16px;
}