body {
    /*margin: 0px 0px 1px 0px; !* the extra 1px allows the iOS inner/outer check to work *!
    background: url("../assets/Background.jpg") no-repeat left top fixed;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    -o-background-size: cover;
    background-size: cover;*/
}
#game {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

#overlay {
    position: fixed;
    width: 100%;
    height: 101%;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
}

#overlay .swipeUpImage {
    height: 20px !important;
    width: 20px !important;
    padding-top: 100px;
    text-align: center;
    margin-left: 40%;
    animation: MoveUpDown 1.5s reverse infinite;
    position: absolute;
    left: 0;
    bottom: 0;
}

@keyframes MoveUpDown {
    0% {
        top: 0;
        bottom: 0;
    }
    50% {
        bottom: 50px;
    }
    100% {
        top: 50px;
        bottom: 0;
    }
}