@media (min-width:480px) and (max-width:639px) {
    #header{padding:0;}
    .innerHeader{display:none}
    .innerDiv_640{display:block;height:50px;}
    .imgBox{clear:both;width:100%;height:296px; position: relative;}
    #act{position:absolute;top:55px;left:0;right:0;bottom:0; box-sizing:border-box;overflow-y:auto;-webkit-overflow-scrolling:touch;}

    /*介绍部分*/
    .intr{width:100%;}
    .intr .titleDiv{width:142px;height: 38px;margin:auto;background:url('../images/btnS.png') no-repeat -10px -38px;}
    .titleSmall{margin:auto;}
    .titleSmall span{display:block;text-align: center;line-height: 25px;}
    .intrCon{float:left;width:100%;padding:0 10px;}
    .intrCon div,intrCon p {width:100%}
    .intrCon .conDiv{width:100%;}

    .imgBox{clear:both;float:left;width:747px;overflow:hidden;position: relative;height:170px;}
    .imgImg_{display:none;width:67%}
    #imgBox0,#imgBox1,#imgBox2,#imgBox3{display:block;}
    #imgBox0{z-index: 999; position: absolute;width:240px;height:131px;left:0px;bottom:0;background: url('../images/boxdiv0.png') no-repeat center top;background-size: cover}
    #imgBox1{z-index: 998; position: absolute;width:214px;height:178px;left:18%;bottom:0;background: url('../images/boxdiv1.png') no-repeat center top;background-size: cover}
    #imgBox2{z-index: 997; position: absolute;width:87px;height:113px;left:48%;bottom:0;background: url('../images/boxdiv2.png') no-repeat center top;background-size: cover}
    #imgBox3{z-index: 999; position: absolute;width:40px;height:88px;left:61%;bottom:0;background: url('../images/boxdiv3.png') no-repeat center top;background-size: cover}

    .video_{width: 100%;height:280px;}
    .vDiv{margin:auto;width:100%;height:280px;}
    .footer_d{width:100%;text-align: center; color:#fff; font-family: Arial;height: 41px; line-height:41px;background-color:#3295c5;}
    .padd_{padding:0 10px;}
    .menu{padding:0;width:100%;}
    .dimg{ text-align: center;margin:auto;width:auto;position: relative;}
    .mess_{position:absolute;right:0;left:0;bottom:17px;width:100%;padding:0 0 0 0px;}
    .mess_ .p1{font:26px/1.5 "微软雅黑"; line-height: 30px;border-bottom: 1px solid #000; text-align: left;}
    .mess_ .p2{padding:7px 0 0 0;font:18px/1.5 "微软雅黑"; line-height: 35px;border-bottom: 0px solid #000; text-align: left;}
    .mess_ .p3{padding:7px 0 0 0;font:18px/1.5 "微软雅黑"; line-height: 22px;border-bottom: 0px solid #000; text-align: left;}
    .fxDiv{display:none;}
    .footer_right{padding:4px 0;background-color: #363636; color: #fff; font: 10px/1.5 'Arial'}
}