.jiaZbj{
    width: 100%;
    height: 670px;
    background: url('../images/jz.jpg') no-repeat;
    background-size: 100%,100%;
}
.picList img{
    width: 100px;
    height: 500px;
}
.about-tit{
    color: white;
    padding-top: 20px;
    box-sizing: border-box;
}
@media (max-width:800px) {
    .fl img{
        display: block;
        width: 100%;
    }
    
    .about-tit{
        padding-top:0;
    }
    .about-tit .h2x, .about-tit .h3x{
        font-size: 17px;
    }

.jiaZbj{
    width: 100%;
    height: 150px;
    /* background-size: 100%,100%; */
}
}

@media (max-width:500px) {
    .fl img{
        display: block;
        width: 100%;
        
    }
    .about-tit{
        padding-top: 0;
    }
    .about-tit .h2x, .about-tit .h3x{
        font-size: 17px;
    }

.jiaZbj{
    width: 100%;
    height: 150px;
    /* background-size: 100%,100%; */
}
}