.about-timeline {
    overflow: hidden;
    position: relative
}

.about-timeline .timeline {
    width: 50%;
    float: left;
    z-index: 1;
    position: relative
}

.about-timeline .timeline:after, .about-timeline .timeline:before {
    content: "";
    display: block;
    clear: both
}

.about-timeline .timeline:before {
    content: "";
    width: 10px;
    height: 90%;
    background: var(--site-color-700);
    position: absolute;
    top: 10%;
    right: -5px;
}

.about-timeline .timeline:last-child:before {
    height: 0
}

.about-timeline .timeline-icon {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    background: #fff;
    overflow: hidden;
    text-align: center;
    position: absolute;
    top: 0;
    right: -50px;
    z-index: 3;
    padding: 15px;
    border: 2px solid var(--site-color-700);
    display: flex;
    align-items: center;
    justify-content: center;
}

.timeline-icon > img {
    max-width: 100%;
    max-height: 100%;
}

.about-timeline .year {
    display: block;
    padding: 15px 60px 0 60px;
    font-size: 25px;
    color: var(--site-color-1001);
    text-align: right;
    border-bottom: 2px solid var(--site-color-700);
    z-index: 2;
    position: relative;
    font-weight: bold;
}

.about-timeline .year:before {
    content: "";
    display: block;
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--site-color-700);
    border: 5px solid #fff;
    box-shadow: 0 0 0 4px var(--site-color-700);
    margin: auto;
    position: absolute;
    bottom: -15px;
    left: 4px
}

.about-timeline .year:after {
    content: "";
    border-left: 10px solid var(--site-color-700);
    border-top: 10px solid transparent;
    border-bottom: 10px solid transparent;
    position: absolute;
    bottom: -11px;
    left: 50px
}

.about-timeline .timeline-content {
    padding: 18px 60px 18px 40px;
    text-align: right;
    position: relative;
    z-index: 1
}

.about-timeline .timeline-content:after, .about-timeline .timeline-content:before {
    content: "";
    width: 50px;
    height: 100%;
    border-radius: 50%;
    background: #fff;
    position: absolute;
    top: -7%;
    right: 2px;
    z-index: -1
}

.about-timeline .timeline-content:after {
    left: auto;
    right: -52px;
}

.about-timeline .timeline:last-child .timeline-content:after, .about-timeline .timeline:last-child .timeline-content:before {
    width: 0;
    height: 0
}

.about-timeline .title {
    font-size: 22px;
    font-weight: 700;
    color: #727cb6;
    margin-top: 0
}

.about-timeline .description {
    font-size: 18px;
    color: var(--site-color-1001);
    /* line-height: 25px; */
}

.about-timeline .timeline:nth-child(2) {
    margin-top: 140px;
}

.about-timeline .timeline:nth-child(even) {
    margin-bottom: 80px;
}

.about-timeline .timeline:nth-child(odd) {
    margin: -140px 0 0
}

.about-timeline .timeline:first-child, .about-timeline .timeline:last-child:nth-child(even) {
    margin: 0 !important;
}

.about-timeline .timeline:nth-child(2n) .timeline-icon, .about-timeline .timeline:nth-child(2n):before {
    right: auto;
    left: -5px;
}

.about-timeline .timeline:nth-child(2n) .timeline-icon {
    left: -50px;
}

.about-timeline .timeline:nth-child(2n) .year {
    padding: 17px 60px 0 60px;
    text-align: left
}

.about-timeline .timeline:nth-child(2n) .year:before {
    left: auto;
    right: 4px;
}

.about-timeline .timeline:nth-child(2n) .year:after {
    border-left: none;
    border-right: 10px solid var(--site-color-700);
    right: 50px;
}

.about-timeline .timeline:nth-child(2n) .timeline-content {
    padding: 18px 40px 18px 60px;
    text-align: left
}

.about-timeline .timeline:nth-child(2n) .timeline-content:before {
    left: -52px;
}

.about-timeline .timeline:nth-child(2n) .timeline-content:after {
    left: 2px;
}

@media only screen and (max-width: 990px) {
    .about-timeline .timeline {
        width: 100%
    }

    .about-timeline .timeline:nth-child(even), .about-timeline .timeline:nth-child(odd) {
        margin: 0
    }

    .about-timeline .timeline:before, .about-timeline .timeline:nth-child(2n):before {
        width: 10px;
        height: 100%;
        left: 25px;
        top: 0%;
    }

    .about-timeline .timeline-icon, .about-timeline .timeline:nth-child(2n) .timeline-icon {
        left: 0px;
    }

    .about-timeline .timeline:nth-child(2n) .year, .about-timeline .year {
        text-align: left;
        padding: 0 0px 0 60px;
        border: none;
    }

    .about-timeline .timeline:nth-child(2n) .year:before, .about-timeline .year:before {
        left: auto;
        right: 4px;
        display: none;
    }

    .about-timeline .year:after {
        left: auto;
        right: 50px;
        border-right: 10px solid #303a3b;
        border-left: none;
        display: none;
    }

    .about-timeline .timeline-content .description {
        color: #666
    }

    .about-timeline .timeline-content, .about-timeline .timeline:nth-child(2n) .timeline-content {
        text-align: left;
        padding: 18px 0px 18px 45px;
    }

    .about-timeline .timeline-content:after, .about-timeline .timeline-content:before {
        width: 0;
        height: 0
    }

    .about-timeline .timeline-icon {
        width: 60px;
        height: 60px;
        right: -30px;
        z-index: 3;
        padding: 5px;
    }
}