::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: #fff;
}
::-webkit-scrollbar-thumb {
    background: #1b1b1b;
}
.history-wrap *{
        -webkit-box-sizing: initial;
        -moz-box-sizing: initial;
        box-sizing: initial;
}
.w1520 {
    width: 63%;
    margin: 0 auto;
}
.history-wrap {
    margin-top: 15px;
    padding-top: 38px;
    background-color: #fff;
    margin-bottom: 40px;
}
.history-wrap .tit-box {
    text-align: center;
}
.history-wrap .tit-box h4 {
    font-size: 24px;
    line-height: 50px;
    font-family: "Base-font";
    color: #333;
}
.history-wrap .tit-box .st {
    font-size: 16px;
    line-height: 20px;
    color: #777;
}
.history-wrap .cent-wrap {
    width: 89.2%;
    margin: 24px auto 0;
    position: relative;
    padding-bottom: 50px;
}
ul:after {
    display: block;
    height: 0;
    clear: both;
    visibility: hidden;
    overflow: hidden;
    content: ".";
}
.history-wrap .cent-wrap ul {
    position: relative;
    z-index: 2;
}
.history-wrap .cent-wrap ul, .history-wrap .cent-wrap li {
    width: 100%;
}
.history-wrap .cent-wrap li {
    margin-top: 45px;
    position: relative;
    /* opacity: 0; */
    transition: opacity 0.4s ease 0s;
    float: left;
}
.history-wrap .cent-wrap li.show {
    opacity: 1;
}
.history-wrap .cent-wrap li .img {
    display: block;
    width: 10.8%;
    border-radius: 50%;
    overflow: hidden;
    margin-top: 8px;
}
/* .history-wrap .cent-wrap li:nth-child(odd) .img {
    float: left;
}
.history-wrap .cent-wrap li:nth-child(even) .img {
    float: right;
} */
/* img {
    border: 0;
    vertical-align: middle;
}
.history-wrap .cent-wrap li .img img {
    width: 100%;
    height: auto;
} */
.history-wrap .cent-wrap li .cont-box {
    width: 45%;
}
.history-wrap .cent-wrap li:nth-child(even) .cont-box {
    float: left;
    text-align: right;
}
.history-wrap .cent-wrap li:nth-child(odd) .cont-box {
    float: right;
    text-align: left;
}
.history-wrap .cent-wrap li .year {
    font-size: 26px;
    line-height: 18px;
    color: #333;
    font-weight: bold;
    font-family: "Arial";
}
.history-wrap .cent-wrap li .word {
    font-size: 16px;
    line-height: 30px;
    margin-top: 10px;
    color: #777;
}
.history-wrap .cent-wrap li .point {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 1px solid #ccc;
    background-color: #fff;
    position: absolute;
    left: 50%;
    margin-left: -10px;
    text-align: center;
    border-radius: 50%;
    top: 0;
}
.history-wrap .cent-wrap li .point.years-point{
    border-color: #6eb9ff;
}
.history-wrap .cent-wrap li .point i {
    /* display: none; */
    width: 10px;
    height: 10px;
    margin-top: 4px;
    vertical-align: top;
    background-color: #000;
    border-radius: 50%;
}
.history-wrap .cent-wrap li .point i {
    display: inline-block;
}
.history-wrap .cent-line-box {
    width: 1px;
    height: 100%;
    position: absolute;
    left: 50%;
    top: 0;
    z-index: 1;
}
.history-wrap .cent-line-box .line {
    display: block;
    width: 1px;
    height: 100%;
    background-color: #ccc;
}
.history-wrap .cent-line-box .point-t {
    display: inline-block;
    width: 15px;
    height: 15px;
    border: 1px solid #ccc;
    border-radius: 50%;
    background-color: #fff;
    margin-left: -8px;
    position: absolute;
    top: 0;
}
.history-wrap .bot-tit {
    line-height: 36px;
    font-size: 14px;
    text-align: center;
    color: #999;
    margin-top: 16px;
}


@media (max-width: 768px){
    .history-wrap .cent-line-box{
        left: 0;
    }
    .history-wrap .cent-wrap li{
        width: 94%;
        padding-left: 6%;
    }
    .history-wrap .cent-wrap li .img{
        display: none;
    }
    .history-wrap .cent-wrap li .point{
        left: 0;
    }
    .history-wrap .cent-wrap li:nth-child(odd) .cont-box,.history-wrap .cent-wrap li:nth-child(even) .cont-box{
        text-align: left;
    }
    .history-wrap .cent-wrap li:nth-child(even) .cont-box{
        float: left;
    }
    .history-wrap .cent-line-box .point-h{
        background: none;
    }
    .history-wrap .cent-wrap li .cont-box{
        width: 96%;
    }
    .history-wrap .cent-wrap li:nth-child(odd) .cont-box{
        margin-left: 0;
    }
    .history-wrap .cent-wrap li:nth-child(even) .cont-box{
        width: 96%;
        margin-right: 0;
        margin-left: 10px;
    }
    .history-wrap .cent-wrap li{
        opacity: 1;
    }
    .history-wrap .cent-wrap li .point i{
        display: inline-block;
    }
    .about-wrap .thi-wrap .row-box .up-cont .font, .about-wrap .fiv-wrap .row-box .up-cont .font{
        display: none;
    }
    .about-wrap .thi-wrap .row-box .up-cont .stit, .about-wrap .fiv-wrap .row-box .up-cont .stit{
        font-size: 16px;
        line-height: 20px;
    }
    .about-wrap .thi-wrap .row-box:hover .up-cont, .about-wrap .fiv-wrap .row-box:hover .up-cont {
        bottom: 10px;
    }
    .bot-out-link{
        display: none;
    }
    .w1520 {
        width: 85%;
    }
    .history-wrap .cent-wrap li .year {
        font-size: 20px;
    }
    .history-wrap .cent-wrap li .word {
        font-size: 14px;
    }
}