.box_container {}

.banner {
    position: relative;
    width   : 100%;
    height  : 45rem;
    overflow: hidden;
}

.banner>img {
    position: absolute;
    top:0;
    left:0;
    width : 100%;
    height: 100%;

}

.banner_txt {
    position         : absolute;
    top              : 0;
    left             : 50%;
    transform        : translateX(-50%);
    -webkit-transform: translateX(-50%);
    -ms-transform    : translateX(-50%);
    -o-transform     : translateX(-50%);
    -moz-transform   : translateX(-50%);

}

.banner_txt h1 {
    margin-top    : 140px;
    font-size     : 34px;
    color         : #485263;
    font-family   : PingFang SC;
    font-weight   : 400;
    letter-spacing: 3px;
}

.banner_txt h3 {
    margin-top    : 20px;
    font-size     : 20px;
    font-family   : PingFang SC;
    font-weight   : 400;
    color         : rgba(72, 82, 99, .7);
    opacity       : 0.7;
    letter-spacing: 14px;
    
}

.service_item1 {
    display: flex;
}



.service_title{
    position: relative;
    font-size  : 30px;
    font-family: PingFangSC-Regular;
    color      : #333333;
}
.service_title::after{
    content: '';
    position: absolute;
    top: 52px;
    background: #1A3C79;
    width: 30px;
    height: 2px;
    left: 2px;
}
 .ul_box{
    display: flex;
    align-items: center;
    justify-content: flex-start;
    flex-wrap: wrap;
    list-style: square
}
.ul_box li{
    margin-bottom:20px;
    width: 33.3%;
    font-size:15px;
    color:#666666;
    font-family: PingFangSC-Regular;
}
.service_item1 .img1 {
    /* border:1px solid red; */
    margin: 42px 0;
    width : 607px;
    /* height: 470px; */
}
.service_item1 .right{
    padding-top:85px;
    padding-left:109px;
}
.service_item1 ul{
    margin-left:15px;
    margin-top:50px;
}
.service_item2{
    background: url(../img/service/service_bg.png) no-repeat center center;
}
.service_item2>div{
    display: flex;
}
.service_item2 .right{
    width: 500px;
    height: 510px;
}
.service_item2 .right>img{
    /* border:1px solid red; */
    width: 100%;
    height: 100%;
}
.service_item2 .left{
    padding-top:70px;
    padding-left:80px;
    flex:1;
}
.service_item2 ul{
    margin-left:15px;
    margin-top:45px;
    width: 500px;
}
.service_item3{
    display: flex;
}
.service_item3 .img1 {
    /* border:1px solid red; */
    margin: 42px 0 0;
    width : 607px;
    height: 450px;
}
.service_item3 .right{
    padding-top:105px;
    padding-left:109px;
}
.service_item3 ul{
    margin-left:15px;
    margin-top:50px;
}
.service_item4{
    background: url(../img/service/service_bg2.png) no-repeat center center !important;
}
.service_item4>div{
    display: flex;
}
.service_item4 .right{
    margin:33px 0 55px;
    width: 500px;
    height: 406px;
}
.service_item4 .right>img{
    /* border:1px solid red; */
    width: 100%;
    height: 100%;
}
.service_item4 .left{
    padding-left:80px;
    padding-top:90px;
    flex:1;
}
.service_item4 ul{
    margin-left:15px;
    margin-top:45px;
    width: 500px;
}