.con_box{
    width: 100%;
    height: 3100px;
    position: relative;
    background-color: #f5f5f5;
    font-family: "Arial","Microsoft YaHei","黑体","宋体",sans-serif;
}
.con_box .back_img{
    width: 100%;
    height: 820px;
    margin-top: -100px
}
.con_con{
    position: absolute;
    left: 50%;
    top: 560px;
    transform: translateX(-50%);
    width: 1200px;
    background-color: #fff;
}

.con_box .img_text{
    position: absolute;
    left: 50%;
    top: 300px;
    transform: translateX(-50%);
    width: 1200px;
    color: #fff;
    
}

.con_box .img_text .img_title{
    font-size: 30px;
    line-height: 3.5em;
    font-weight: bolder;
}

.con_box .img_text .img_content{
    font-size: 28px;
    width: 600px;
    line-height: 1.5em;
}

.con_con .one{
    height: 600px;
    position: relative;
    padding: 50px 130px 0px 130px;
    
}

.con_con .one .one_title{
    margin: 0 auto;
    width: 8.2em;
    font-size: 34px;
    line-height: 3em;
}

.con_con .one .table_td_title{
    font-size: 20px;
    line-height: 3em;
    padding-top: 3rem;
    color: #666;
}

.con_con .one .table_td_content{
    font-size: 16px;
    color: #999;
    line-height: 2em;
}


.con_con .one .one_content{
    font-size: 18px;
    margin: 0 auto;
    color: #999;
    width: 51.3em;
}

.con_con .one_left{
    width: 400px;
    position: absolute;
    top: 180px;
    left: 140px;
}
.con_con .one_right{
    width: 277px;
    height: 496px;
    position: absolute;
    width: 300px;
    right: 160px;
    bottom: 4px;
}
.con_con .title{
    font-size: 34px;
    letter-spacing:4px;
    line-height: 50px;
    color: #333
}
.con_con .tips{
    width: 340px;
    padding: 10px 0;
    font-size: 14px;
    letter-spacing: 1px;
    line-height: 30px;
    color: #888
}
.con_con .btn{
    line-height: 40px;
    width: 160px;
    text-align: center;
    font-size: 16px;
    color: #666;
    border: 1px solid #666;
    margin-top: 20px;
    cursor: pointer;
}
.two .two_img{
    display: inline-block;
    width: 100%;
    height: 100%;
}
.three .one_right{
    width: 665px;
    height: 375px;
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%)
}
.three .one_left,
.four .one_left{
    top: 150px
}
.four img{
    width: 100%;
    height: 100%;
}
.four .one_left .title,
.four .one_left .tips{
    color: #f5f5f5
}
.four .btn{
    color: #f5f5f5;
    border-color: #666
}