#popup {
    width: 837px;
    height: 550px;
    position: fixed;
    top: 100px;
    left: 60px;
    margin-top: 0px;
    margin-left: 0px;
    display: none;
    text-align: center;
    padding: 5px;
    border: 1px solid black;
    background: white;
}

#popupcanvas {
    width: 837px;
    height: 490px;
}