.ffe-collapse {
    display: grid;
    grid-template-rows: 0fr;
    transition: grid-template-rows var(--ffe-transition-duration)
        var(--ffe-ease);
}

.ffe-collapse--hidden {
    visibility: hidden;
}

.ffe-collapse--open {
    grid-template-rows: 1fr;
}

.ffe-collapse__inner {
    overflow: hidden;
}

.ffe-collapse__inner.ffe-collapse__inner--visible {
    overflow: visible;
}