#main{
    background: url(../image/background_3.png) no-repeat ;
    padding-bottom: 50px;
    background-size:100% 100%; 
}
#main .ul-concent{
    display: none;
}
#main .ul-concent .content-li .content-li-div .div-dotted{
    border: 0;
    position: absolute;
    height: 1068px;
    width: 0px;
    border-left: 2px dotted #76d8f9; 
    left: 31px;
    top: -12px;
    z-index: 1;
}
#main .ul-concent .content-li .content-li-div .div-dotted .dotted-span1{
    display: block;
    width: 8px;
    height: 8px;
    background: #76d8f9;
    border-radius: 50%;
    position: absolute;
    left: -5px;
    top: -5px;
}
#main .ul-concent .content-li .content-li-div .div-dotted .dotted-span2{
    display: block;
    width: 8px;
    height: 8px;
    background: #76d8f9;
    border-radius: 50%;
    position: absolute;
    left: -5px;
    top: 1068px;
}


#main .ul-head{
    text-align: center;
    margin-top: 2px;
}
#main .ul-head li{
    margin:0 65px; 
    height: 74px;
    line-height: 74px;
    font-size: 14px;
    color: #535353;
    display:inline-block;
}
#main .ul-head li .div-year{
    color: #535353;
    cursor: pointer; 
}
#main .ul-head li .div-color{
    color: #499cfc;
    font-weight:600; 
}
#main .ul-head li .div-bor{
    display: block;
    height: 4px;
    background: linear-gradient(#19b8d5, #19b8d5); 
}
#main .ul-concent .content-li .content-li-div{
    display: flex;
    margin-top: 30px;
}
#main .ul-concent .content-li .content-li-div .div-img{
    position: relative;
    z-index: 100;
    display:inline-block;
    
}
#main .ul-concent .content-li .content-li-div .div-img img{
    height: 74px;
    margin-top: 10px;
    position: relative;
    z-index: 100;
}
#main .ul-concent{
    margin-top: 4px;
}
#main .ul-concent .content-li .content-li-div .div-h{
    border: 1px solid #cbd5de;
    width: 1094px;
    height: 87px;
    margin-left: 34px;
    position: relative;
    border-left: 1px solid transparent;
    display:inline-block;
}
.left-bor{
    width: 0;
    position: absolute;
    height: 29px;
    border-left: 1px solid #cbd5de;
    left: -1px;
    top: -1px;
}
.left-bor-2{
    width: 0;
    position: absolute;
    height: 29px;
    border-left: 1px solid #cbd5de;
    left: -1px;
    top: 59px;
}
#main .ul-concent .content-li .content-li-div .div-h:hover{
    border: 1px solid #00b4ff;
    border-left: 1px solid transparent;
    box-shadow:1px 0px 3px #00b4ff;
    
   
}
#main .ul-concent .content-li .content-li-div .div-h:hover .left-bor{
 
    border-left: 1px solid #00b4ff;
    box-shadow:1px 0px 3px #00b4ff;
 
}
#main .ul-concent .content-li .content-li-div .div-h:hover .left-bor-2{
 
    border-left: 1px solid #00b4ff;
 
}
#main .ul-concent .content-li .content-li-div .div-h:hover .sanjiao{
    border-left: 1px solid #00b4ff;
    border-bottom: 1px solid #00b4ff;
}




#main .ul-concent .content-li .content-li-div div h3{
    font-size: 15px;
    height: 53px;
    line-height: 53px;
    color: #333333;
    margin-left: 29px;
    font-weight: 600; 
    
}
#main .ul-concent .content-li .content-li-div div h3 span{
    display: block;
    position: absolute;;
    width: 5px;
    height: 5px;
    background: #33ccff;
    top: 25px;
    left: 16px;
    border-radius: 50%;
}

#main .ul-concent .content-li .content-li-div div p{
    font-size: 14px;
    height: 20px;
    line-height: 20px;
    color: #727373;
    margin-left: 19px;
}
#main .ul-concent .content-li .content-li-div div .sanjiao{
    display: block;
    width: 22px;
    height: 22px;
    
    position: absolute;
    left: -12px;
    top: 32px;
    transform: rotate(45deg);
    border-left: 1px solid #cbd5de;
    border-bottom: 1px solid #cbd5de;
    
}