.bannerClass{
            width: 100%;
            height: 642px;


        }
        .projectTitle{
            width: 100%;
            height: 160px;
            background-repeat: no-repeat;
            background-position: center;
            background-image: url("../images/projectTitle.jpg");
        }
        .projectDesView{
            width: 1200px;
            overflow: hidden;
            margin: 0 auto;
            margin-bottom: 50px;
        }
        .projectDes{
            width: 400px;
            height: 450px;
            background-position: center;
            background-repeat: no-repeat;
            float: left;
            -webkit-box-sizing: border-box;
            -moz-box-sizing: border-box;
            box-sizing: border-box;
            font-size: 14px;
            line-height: 25px;
            padding-left: 80px;
            padding-right: 80px;
            padding-top: 200px;
        }
        .bg1{
            background-image: url("../images/bg1.png");
        }
        .bg2{
            background-image: url("../images/bg2.png");
        }
        .bg3{
            background-image: url("../images/bg3.png");
        }
        .bg4{
            background-image: url("../images/bg4.png");
            padding-top: 220px;
            padding-left: 85px;
            padding-right: 75px;
        }
        .bg5{
            background-image: url("../images/bg5.png");
            padding-top: 220px;
            padding-left: 85px;
            padding-right: 75px;
        }
        .bg6{
            background-image: url("../images/bg6.png");
            padding-top: 220px;
            padding-left: 85px;
            padding-right: 75px;
        }