/* 时间线 */
.historline {
    width: 100%;
    max-width: 1920px;
    margin: 50px auto 0;
    height: 550px;
    background: url(../images/historybg.jpg) center bottom no-repeat;
    background-size: cover;
    position: relative;
    box-sizing: border-box;
    overflow: hidden;
}

.historline_swiper {
    width: 100%;
    max-width: 1200px;
    height: 305px;
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    box-sizing: border-box;
}


.historline_swiper::before {
    content: "";
    position: absolute;
    top: 57px;
    left: -356px;
    width: 100%;
    height: 1px;
    background: #eee;
}

.historline_swiper::after {
    content: "";
    position: absolute;
    top: 57px;
    right: -430px;
    width: 100%;
    height: 1px;
    background: #eee;
}

.historline_swiper_swi {
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.historline_swiper_swi .swiper-slide {
    text-align: center;
    font-size: 18px;
    background: transparent;

    /* Center slide text vertically */
    display: -webkit-box;
    display: -ms-flexbox;
    display: -webkit-flex;
    display: flex;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
    -webkit-justify-content: center;
    justify-content: center;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-align-items: center;
    align-items: center;
    position: relative;
    width: 22.5%;
}

.historline .swiper-button-prev,
.historline .swiper-button-next {
    top: 19%;
    opacity: 0;
}

.historline .swiper-button-prev::after,
.historline .swiper-button-next::after {
    color: #eee;
}

.historline_swiper_swi:hover .swiper-button-prev,
.historline_swiper_swi:hover .swiper-button-next {
    opacity: 1;
}

.historline .z3db1ftimeline_h {
    padding-top: 0;

}

.historline .z3db1ftimeline-title {
    font-size: 36px;
    color: #333;
}

.historline .swiper-slide-active .z3db1ftimeline-content h3,
.historline .swiper-slide-active .z3db1ftimeline-content p {
    color: #014099;
}

@media screen and (max-width:1024px) {
    .historline_swiper_swi .swiper-slide {
        width: 31.5%;
    }
}

@media screen and (max-width:768px) {
    .historline_swiper_swi .swiper-slide {
        width: 50%;
    }
}

@media screen and (max-width:650px) {
    .historline_swiper_swi {
        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;
    }

    .historline_swiper_swi .swiper-slide {
        width: 100%;
    }

    .historline .swiper-button-prev,
    .historline .swiper-button-next {
        display: none;
    }

    .historline .z3db1ftimeline_h {
        padding-left: 191px;
    }
}