.wrapBg1{background:url(http://sd.laohu.com/_s/img/topPic1.jpg) no-repeat center 0; background-size: 100% auto;}
.wrapBg2{background:url(http://sd.laohu.com/_s/img/topPic2.jpg) no-repeat center 0; background-size: 100% auto;}
.wrapBg3{background:url(http://sd.laohu.com/_s/img/topPic3.jpg) no-repeat center 0; background-size: 100% auto;}
.wrapBg3 .textBox{padding-top: 15rem;}
#logo{left: 0; top: 0;}