#guide {
    background-image: url(../../image/history/boyu_history_bg.jpg);
}
.develop-history .navigation{
    width: 100%;
    height: 67px;
}
.develop-history > div{
    width: 1200px;
    margin: 0 auto;
}
.develop-history .navigation .navigation_content{
    height: 25px;
    margin-top :45px;
    padding-bottom: 5px;
    border-bottom: 1px solid #000000;
}

#boyu-develop {
    width: 100%;
    /*    height: 677px;*/
    display: -webkit-flex;
    display: flex;
    -webkit-flex-direction: column;
    flex-direction: column;
    -webkit-justify-content: center;
    justify-content: center;
}

#boyu-develop .subnav {
    width: 1200px;
    height:220px;
    margin: 0 auto 50px;
    border-bottom: 1px solid #064db7;
    padding-bottom: 40px;
}

#boyu-develop .subnav .subnav_title{
    text-align: center;
    font-weight: bold;
    font-size: 23px;
    padding-bottom: 40px;
}

#boyu-develop .subnav p{
    text-align: center;
    font-size: 14px;
}

#boyu-develop .subnav .subnav_content {
    margin-left: 147px;
    margin-right: 147px;
    display: -webkit-flex;
    display: flex;
    -webkit-justify-content: space-between;
    justify-content: space-between;
}

#boyu-develop .subnav .subnav_content  .now,
#boyu-develop .subnav .subnav_content  .expand,
#boyu-develop .subnav .subnav_content  .beginning{
    height: 45px;
    width: 225px;
    text-align: center;
    line-height: 45px;
    margin: 70px 0;
    border: 1px solid #064db7;
    position: relative;
    cursor: pointer;
}
#boyu-develop .subnav .subnav_content.subnav_content-en  .now,
#boyu-develop .subnav .subnav_content.subnav_content-en  .expand,
#boyu-develop .subnav .subnav_content.subnav_content-en  .beginning{
    width: 270px;
}

#boyu-develop .subnav .subnav_content  .now:hover,
#boyu-develop .subnav .subnav_content  .expand:hover,
#boyu-develop .subnav .subnav_content  .beginning:hover,
#boyu-develop .subnav .subnav_content div.active{
    text-align: center;
    border: 1px solid #064db7;
    color: #FFFFFF;
    background-color: #064db7;
}
#boyu-develop .subnav .subnav_content  .now a,
#boyu-develop .subnav .subnav_content  .expand a,
#boyu-develop .subnav .subnav_content  .beginning a,
#boyu-develop .subnav .subnav_content div a{
    color: #333333;
}
#boyu-develop .subnav .subnav_content  .now:hover a,
#boyu-develop .subnav .subnav_content  .expand:hover a,
#boyu-develop .subnav .subnav_content  .beginning:hover a,
#boyu-develop .subnav .subnav_content div.active a{
    color: #ffffff;
}
#boyu-develop img.logo{
    margin-left: 56px;
    width: 166px;
    display: block;
    position: absolute;
    top:92px;
    left: 0;
}
#boyu-develop .beginning_content img.logo{
    top: -33px;
}
#boyu-develop .expand_content img.logo{
    top: 23px;
}
#boyu-develop .year{
    font-size: 22px;
    color: #064db7;
    padding-left: 10px;
    position: relative;
    font-family: "DINPro", "PingFangSC", "微软雅黑",sans-serif;
}
#boyu-develop .year:before{
    content: "";
    position: absolute;
    width: 5px;
    height: 5px;
    font-size: 0;
    background: #064db7;
    border-radius: 5px;
    top:8px;
    left: -2px;
}
#boyu-develop .expand_content .year:after{
    height: calc(100% + 50px);
    top:-50px;
}
#boyu-develop .expand_content .common_news:last-child .year:after{
    height: calc(100% + 100px);
}
#boyu-develop .beginning_content .common_news:first-child .year:after{
    height: calc(100% + 60px);
    top:-50px;
}
.beginning_content{
    width: 1200px;
    margin: 100px auto 0;
}
.expand_content{
    width: 1200px;
    margin: 0 auto;
    padding-top: 50px;
}
.now_content{
    width: 1200px;
    margin: 0 auto;
}
#boyu-develop .year:after{
    content: "";
    position: absolute;
    width: 1px;
    height: 100%;
    font-size: 0;
    background: #064db7;
    border-radius: 5px;
    top:10px;
    left: 0;
}
#boyu-develop .now_content img.logo{
    top:-26px;
}
#boyu-develop .content_container{
    margin-top: 50px;
}
#boyu-develop .content_container .container{
    width: 100%;
}
#boyu-develop .content_container .container:nth-child(4){
    background: #f7f7f7;
}
#boyu-develop .beginning_content .common_news:last-child .year:after{
    height: 0;
}
#boyu-develop .common_content{
    display: flex;
    position: relative;
}
#boyu-develop .common_content .common_news{
    display: flex;
    width: 700px;
    margin-left: 222px;
    min-height: 100px;
}
#boyu-develop .common_content .common_news p{
    margin-left: 53px;
    line-height: 1.4;
}
#boyu-develop .common_content .common_news p img{
    margin-top: 25px;
    margin-bottom: 50px;
    display: block;
}