.Game {
    position: fixed;
    /* relative */
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    /* 100vh */
    border: none;
    padding: 0;
    margin: 0;
    z-index: 900;
}

.iOShand {
    position: fixed;
    height: 100%;
}

.dontVisualizePortal {
    background-color: black;
}

.dontVisualizePortal>div:first-child {
    visibility: hidden;
}