.tech_adv{
    width: 100%;
    height: 500px;
}
.tech_adv img{
    height: 100%;
    width: 100%;
}
.tech_h1{
    text-align: center;
    width: 80%;
    padding-top: 30px;
    margin: 0 auto;
}
.tech_h1-span{
    width: 100%;
    margin: 0 auto;
    padding-top: 20px;
    padding-bottom: 30px;
}
.tech_h1 span{
     font-size:15px;
    /*font-family: Source Han Sans SC;*/
    /* font-weight: 500;*/
    /* color: #333333;*/
     line-height: 33px;
}
.tech_content{
    width: 80%;
    margin: 0 auto;
}
.tech_box{
    width:100%;
    height: 400px;
    background: #F4F9F6;
}
.tech_text{
    width: 90%;
    float: left;
}.tech_text h1{
    margin-top: 80px;
    font-size: 35px;
}.tech_text h4{
      margin-top: 20px;
      font-size:  15px;
      line-height: 30px;
}
 .text_img{
     margin-top: 20px;
     float: right;
     height:350px;
     margin-left: 20px;
 } .text_imgs{
     margin-top: 20px;
     float: left;
     height:350px;
 }
 .tech_boxs{
     width:100%;
     height: 400px;
     background: #fff;
 }
 .tech_bottom{
     width: 100%;
     background: #F4F9F6;
 }
 .tech_bottom_img{
     width: 50%;
     height: 300px;
 }
 .tech_h1 h1{
     font-size: 35px;
     /*font-weight: 900;*/
 }
.tech_h1 h3{
    font-size: 10px;
}