.wrapBg1{background:url(http://sd.laohu.com/_s/zthf4m/topPic1_20161031.jpg) no-repeat center 0; background-size: 100% auto;}
.wrapBg2{background:url(http://sd.laohu.com/_s/zthf4m/topPic2_20161031.jpg) no-repeat center 0; background-size: 100% auto;}
.wrapBg3{background:url(http://sd.laohu.com/_s/zthf4m/topPic3_20161031.jpg) no-repeat center 0; background-size: 100% auto;}
.wrapBg3 .textBox{padding-top: 15rem;}
#logo{ top: 0.5rem; left: 10.5rem;}
.wrapBg1 #logo{ top: 0.5rem; left: 0.5rem;}