#window{
    position:absolute;
    top: 50%;
    left: 50%;
    max-height:400px;
    overflow: auto;
    transform:translate(-50%,-50%);
    padding:8px;
    border:1px solid #023269;
    width:400px;
    border-radius:4px;
    background-color:#c9e9ffad;
}