:root {
    --card-height: 24vw;
    --card-margin: 4vw;
    --card-top-offset: 1em;
    --outline-width: 0px;
}

#cards {
    /* Make place at bottom, as items will slide to that position*/
    padding-bottom: calc(var(--numcards) * var(--card-top-offset));
    /* Don't include the --card-margin in padding, as that will affect the scroll-timeline*/
    margin-bottom: 2rem;
}

#card_1 {
    --index: 1;
}

#card_2 {
    --index: 2;
}

#card_3 {
    --index: 3;
}

#card_4 {
    --index: 4;
}

#card_5 {
    --index: 5;
}

.card {
    position: sticky;
    top: 10rem;
    padding-top: calc(var(--index) * var(--card-top-offset));
}

.card__content {
    transform-origin: 50% 0%;
    will-change: transform;
}

#cards {
    list-style: none;
    outline: calc(var(--outline-width) * 10) solid hotpink;
    display: grid;
    grid-template-columns: 1fr;
    grid-template-rows: repeat(var(--numcards), var(--card-height));
    gap: var(--card-margin);
}

.card {
    outline: var(--outline-width) solid lime;
}

.card__content {
    box-shadow: 0 0.2em 1em rgba(0, 0, 0, 0.1), 0 1em 2em rgba(0, 0, 0, 0.1);
    background: rgb(255, 255, 255);
    color: rgb(10, 5, 7);
    border-radius: 1em;
    overflow: hidden;
    display: grid;
    grid-template-areas: "text img";
    grid-template-columns: 1fr 1fr;
    grid-template-rows: auto;
    align-items: stretch;
    outline: var(--outline-width) solid blue;
}

    .card__content > div {
        grid-area: text;
        width: 80%;
        place-self: center;
        text-align: left;
        display: grid;
        gap: 1em;
        place-items: start;
    }

    .card__content > figure {
        grid-area: img;
        overflow: hidden;
    }

        .card__content > figure > img {
            width: 100%;
            height: 100%;
            object-fit: cover;
        }

@supports (animation-timeline: view()) {
    .card {
        --index0: calc(var(--index) - 1); /* 0-based index */
        --reverse-index: calc(var(--numcards) - var(--index0)); /* reverse index */
        --reverse-index0: calc(var(--reverse-index) - 1); /* 0-based reverse index */
    }

    @keyframes scale {
        to {
            transform: scale(calc(1.1 - calc(0.1 * var(--reverse-index))));
        }
    }

    #cards {
        --numcards: 5;
        view-timeline-name: --cards-element-scrolls-in-body;
    }

    .card__content {
        --start-range: calc(var(--index0) / var(--numcards) * 100%);
        --end-range: calc((var(--index)) / var(--numcards) * 100%);
        animation: linear scale forwards;
        animation-timeline: --cards-element-scrolls-in-body;
        animation-range: exit-crossing var(--start-range) exit-crossing var(--end-range);
    }
}