#custom-popup {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.7);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

#custom-popup-content {
    background: white;
    padding: 20px;
    border-radius: 5px;
    max-width: 80%;
    max-height: 80%;
    overflow-y: auto;
}
