#popup-container {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1;
}
  
#popup {
    text-align: center;
    background-color: white;
    padding: 20px;
    border-radius: 5px;
    box-shadow: 0px 0px 10px rgba(0, 0, 0, 0.2);
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}
  
#close-popup {
    display: block;
    margin-top: 10px;
    display: block;
    margin-right: auto;
    margin-left: auto;
}