:root {
    --color-text: navy;
    --color-bg: papayawhip;
    --color-bg-accent: #ecdcc0;
    --size: clamp(10rem, 1rem + 40vmin, 30rem);
    --gap: calc(var(--size) / 14);
    --duration: 60s;
    --scroll-start: 0;
    --scroll-end: calc(-100% - var(--gap));
}

.marquee {
    display: flex;
    overflow: hidden;
    user-select: none;
    gap: var(--gap);
    mask-image: linear-gradient(var(--mask-direction, to right),
            hsl(0 0% 0% / 0),
            hsl(0 0% 0% / 1) 20%,
            hsl(0 0% 0% / 1) 80%,
            hsl(0 0% 0% / 0));
}

.marquee__group {
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: space-around;
    gap: var(--gap);
    min-width: 100%;
    animation: scroll-x var(--duration) linear infinite;
}

.marquee--vertical {
    --mask-direction: to bottom;
}

.marquee--vertical,
.marquee--vertical .marquee__group {
    flex-direction: column;
}

.marquee--vertical .marquee__group {
    animation-name: scroll-y;
}

.marquee--reverse .marquee__group {
    animation-direction: reverse;
    animation-delay: -3s;
}

@keyframes scroll-x {
    from {
        transform: translateX(var(--scroll-start));
    }

    to {
        transform: translateX(var(--scroll-end));
    }
}

@keyframes scroll-y {
    from {
        transform: translateY(var(--scroll-start));
    }

    to {
        transform: translateY(var(--scroll-end));
    }
}

/* Parent wrapper */
.wrapper {
    display: flex;
    flex-direction: column;
    gap: var(--gap);
    margin: auto;
    max-width: 100vw;
}

.wrapper--vertical {
    flex-direction: row;
    height: 100vh;
}