.main{width:100%;min-width:1200px}
.main .main-top{width:100%;margin:0 auto;min-width: 1200px;}
.main .main-nav{width:100%;height:43px;background:#b5b5b5;margin-top:2px;border-bottom:2px solid #363636}
.main .main-nav .main-nav-body{width:963px;height:100%;margin:0 auto;position:relative}
.main-nav-body ul{height:100%;position:absolute;bottom:0;line-height:47px}
.main-nav-body ul li{float:left;text-align:center;width:84px;height:100%;cursor:pointer;color:#1f1f1f}
.main-nav-body ul li a{width:84px;height:100%;display:inline-block;color:#1f1f1f}
.main-nav-body ul li:hover{background:#363636}
.main-nav-body ul li:hover *{color:#fff;font-weight:bolder}
.main-nav-body .choice{background:#363636;color:#fff}
.main-nav-body .choice a{color:#fff;font-weight:bolder}
.piracy{width:1019px;height:351px;margin:7px auto 6px}
.technica-advertising{width:1019px;height:76px;margin:0 auto;margin-bottom:7px}