#popup {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}

#popup .layer {
    width: 100%;
    height: 100%;
    background-color: #ffffff8a;
}

#popup #popup_body {
    display: flex;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 90vw;
    height: 90vh;
    background-color: rgb(255, 255, 255);
    justify-content: space-evenly;
    flex-direction: column;
    align-items: center;
}