.about{
    padding: 100px 0 80px;
}
 .ab-whoUs{
    padding-top: 60px;
    height: 281px;
    background: url("../images/aboutUS.webp") no-repeat center top;
    padding-left: 640px;
    box-sizing: border-box;
    color:#fff;
}
.ab-left,.ab-right{
    width: 50%;
    float: left;
    box-sizing: border-box;
}
.ab-main{
    border: 1px solid #eaeaea;
    border-top: 0;
}
.ab-info{
    padding: 80px 70px 0 60px;
}
.ab-item1 .ab-right{
    border-left: 1px solid #eaeaea;
    padding-top: 60px;
}