:root {
    --mask-opacity: 0;
    --mask-rgb: 163, 163, 163;
    --bg-game: linear-gradient(
        to bottom,
        rgba(var(--mask-rgb), var(--mask-opacity, 0.7)),
        rgba(var(--mask-rgb), var(--mask-opacity, 0.7))
    ), url("../images/background/jornada-background.png");
}