*{margin:0px; padding:0px;}
li{list-style:none;}
a{text-decoration:none;}
.topboxcontainer{background-color:white; width:100%; overflow:hidden;}
.topbox{width:1000px; height:74px; margin:0 auto; overflow:hidden;}
.topboxleft{float:left; height:74px; overflow:hidden;}
.topboxright{float:right; height:61px; margin-top:13px; overflow:hidden;}
.topboxleft a{display:block; width:193px; height:55px; margin-top:10px;}
.topboxnav li{float:left; height:61px; line-height:61px; margin-left:50px;}
.topboxnav li a{display:block; height:61px; font-family:"微软雅黑"; font-size:18px; color:#757575; cursor:pointer; letter-spacing:2px;}
.topboxnav li a:hover{color:#57b8e7;}