html {
    overflow: hidden;
    animation: scrollLock 0.5s 4s forwards linear;
}
@keyframes scrollLock {
    from {
        overflow: hidden;
    }
    to {
        overflow: visible;
    }
}

@keyframes infinity-scroller-left {
    from {
        transform: translateX(0);
    }
        to {
        transform: translateX(-100%);
    }
}
.scroller {
    width: 100%;
    height: 100%;
    overflow: hidden;
    position: absolute;
    z-index: 1001;
    animation: fadeOuter 2s 4.5s forwards linear;
}
.bg {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 100%;
    height: 100%;
    z-index: 1000;
    background-color: rgb(255, 255, 255);
    opacity: 1;
}
.fg {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 100%;
    height: 100%;
    z-index: 1002;
    background-color: rgb(255, 255, 255);
    opacity: 1;
    animation: fadeOut 2s 0.5s forwards linear;
}

@keyframes fadeOuter {
    from {
        opacity: 1;
    }
    to {
        opacity: 0;
    }
}

.scroller__wrap {
    display: flex;
    overflow: hidden;
    height: 50vh;
    position: relative;
    z-index: 1001;
}
.filter {
    position: absolute;
    inset: 0;
    margin: auto;
    width: 100%;
    height: 100%;
    z-index: 10;
    background-color: rgb(255, 255, 255);
    opacity: 0.5;
}
.text {
    position: absolute;
    inset: 0;
    margin: auto;
    z-index: 20;
    display: flex;
    justify-content: center;
    align-items: center;
    color: rgb(44, 44, 44);
    font-weight: bold;
    opacity: 0;
}
.upper .text {
    font-size: 11vw;
    animation: fadeIn 1s 1s forwards linear;
}
.lower .text {
    font-size: 7vw;
    transform: scaleY(1.5);
    animation: fadeIn 1s 1.5s forwards linear;
}
.scroller__list {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
}
.scroller__list--left {
    animation: infinity-scroller-left 10s infinite linear both;
}
.lower .scroller__list--left {
    animation: infinity-scroller-left 10s infinite linear both reverse;
}
.upper {
    animation: bounceOutUp 1s 4s forwards linear;
}
.lower {
    animation: bounceOutDown 1s 4s forwards linear;
}
.scroller__item {
    width: calc(50vh * 16 / 9);
    height: 50vh;
}
.scroller__item img {
    width: 100%;
    height: 100%;
}