.About_Img {
    width: 100%;
    height: 550px;
    overflow: hidden;
    position: relative;
    background: url(/Img/zyyw.png) no-repeat center center;
    background-size: 100% 100%;
}

.ntitle {
    position: absolute;
    width: 1300px;
    height: 74px;
    background-color: #FBFBFB;
    box-shadow: 2px 4px 2px #888888;
    top: 513px;
    left: 50%;
    margin-left: -650px;
    line-height: 74px;
    color: #737171;
    font-size: 14px;
}

    .ntitle a {
        color: #737171;
    }

.home_img {
    width: 17px;
    height: 16px;
    position: absolute;
    top: 29px;
    left: 2%;
    z-index: 4;
}

.marginleft40 {
    margin-left: 52px;
}

.Down0001 {
    width: 1280px;
    height: 800px;
    margin: 0 auto;
    margin-top:150px;
}
    .Down0001 img {
      width:100%;
      height:100%;
    }