#nav{float: left;margin-left: 32px;height: 48px;}
#nav li {float: left;height: 48px;}
#nav li a{padding: 13px 14px;color: #fff;float: left;font-size: 16px;font-weight: bold;}
#nav-right{float: right;margin-right: 20px;}
#nav-right li{float: left;height: 48px;}
#nav-right li a{padding: 13px 15px;color: #fff;float: left;font-size: 16px;font-weight: bold;}
#nav li a{padding: 13px 13px;color: #fff;float: left;font-size: 16px;font-weight: bold;}
#trapezoid-login span{width: 108px;}
.adWelcome{font-size: 22px;font-weight: bold;color: #4B70B3;margin: 16px 0px 10px;}
.adExplain{font-size: 16px;color: #666;line-height: 28px;text-indent: 34px;}
.mainBottomcenter{width: 300px;float: left;margin-left: 30px;position: relative;}
.mainBottomcenter ul{padding-left: 10px;margin-right: -10px;}
.mainBottomcenter li{float: left;margin:0 6px 6px 0;}