*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
#game{
    position: fixed;
    top: env(safe-area-inset-top);
    left: env(safe-area-inset-left);
    right: env(safe-area-inset-right);
    bottom: env(safe-area-inset-bottom);
}