.banner {
    width: max-content;
    margin: 0 auto;
    padding-top: 200px;
    margin-bottom: 160px;
}

.banner div {
    width: 1000px;
    height: 300px;
    background: #FFDA7B;
    border-radius: 60px 60px 60px 60px;
    margin: 0 auto;
}

.banner-left {
    position: absolute;
    bottom: 0;
    width: 296px;
    transition: 1s;
    left: -296px;
}

.banner-right {
    position: absolute;
    bottom: 54px;
    height: 193px;
    transition: 1s;
    right: -549px;
}

.leftNav {
    position: sticky;
    top: 100px;
    z-index: 1;
    width: max-content;
    transform: translate(-45px, 0);
    float: left;
}

.leftNav span {
    margin-bottom: 25px;
    border-bottom: 1px solid transparent;
    color: #97A0AB;
    cursor: pointer;
}

.leftNav span.on {
    border-bottom: 1px solid #2882FF;
    color: #2882FF;
}

.content-top {
    margin-bottom: 100px;
}

.content {
    background: #fff;
}

.box {
    overflow: hidden;
}

.top-left {
    transform: scale(.8);
    opacity: 0;
    transition: 1s;
}

.content {
    position: absolute;
    z-index: 1;
}

.contentOn {
    position: relative;
    z-index: 1;
}

.contentOn .top-left {
    transform: scale(1) !important;
    opacity: 1 !important;
}

.animateItem {
    opacity: 0;
    transform: translateY(20%);
}

.animateItemOn {
    transition: .5s;
    opacity: 1 !important;
    transform: translateY(0%) !important;
}