#plan {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 700px;
}
#plan-bg {
    height: 700px;
}

#plan-bg > img {
    position: absolute;
    top: 0;
    left: calc(50% - 720px);
    width: 1440px;
    animation: plan-bg-slide 1s linear infinite;
    animation-play-state: paused;
    animation-delay: calc(var(--scroll) * -1s);
}

@keyframes plan-bg-slide {
    from {
        top: -50px;
    }
    to {
        top: 450px;
    }
}

#plan img {
    position: relative;
    left: 32px;
    top: -32px;
    width: 100%;
    max-width: 896px;
}
#plan .description {
    width: calc(100% - 80px);
    max-width: 840px;
    color: #fff;
    font-size: 18px;
    line-height: 38px;
    text-align: center;
}

.md #plan img {
    left: auto;
    width: calc(100% - 5px);
}

.sm #plan {
    height: 460px;
}
.sm #plan-bg {
    height: 460px;
}

.sm #plan-bg > img {
    left: calc(50% - 350px);
    width: 700px;
}

.sm #plan img {
    left: auto;
    top: -15px;
    width: calc(100% - 5px);
}
.sm #plan .description {
    width: calc(100% - 40px);
    font-size: 15px;
    line-height: 28px;
}