.about-banner {
    width: 100%;
    height: 305px;
    max-width:100%;
    float: left;
    background: url(../images/banner.jpg) no-repeat center top ;
    margin-top: 90px;
}
.bannerText {
    font-size: 40px;
    margin-left: 15%;
    color: #fff;
    margin-top: 60px;
    display: inline-block;
    margin-bottom: 20px;
}
.bannerspan {
    font-size: 30px;
    margin-left: 15%;
    color: #fff;
}
.wybg_dy { background-image:url(../images/index7.jpg); background-position:center center; background-attachment:fixed;}
.wybg_tp { background-image:url(../images/index6.jpg); background-position:center center; background-attachment:fixed;}
.wybg_cp {background-image:url(../images/index3.jpg);background-position:center center;background-attachment:fixed;}
.wybg_xw { background-image:url(../images/index8.jpg); background-position:center center; background-attachment:fixed;}