.mainContent{background:url(../images/downloadpage0.png) no-repeat center top; height: 500px}
.mainContent div.center div p{font-size:12px; color:#FFF; font-family:"宋体"; margin: 0 0 0 50px}
div.center img.tab3{ border-right:thin solid grey;}
div.center img.tab1{ border-right:thin solid grey;}