/*header part*/
.headerbtn {height:200px;position:relative;margin:0px auto;overflow:hidden;margin-top:-500px;z-index:55;}
.headerbtn .inner,.content .inner {width:1250px;position:relative;margin:0px auto;/*border:1px solid #ff0000;*/}
.headerbtn .inner {height:200px;z-index:9;}

.headerbtn .main-nav {width:1250px;display:inline-block;position:absolute;left:50%;margin-left:-480px;bottom:0px;z-index:9;}
.headerbtn .main-nav li {float:left;}
.headerbtn .main-nav a {display:block;height:200px;background-image:url("../images/navBtn_bg.png"/*tpa=http://www.55gdw.com/images/navBtn_bg.png*/);background-repeat:no-repeat;}
.headerbtn .main-nav a:hover {background-image:url("../images/navBtn_hover_bg.png"/*tpa=http://www.55gdw.com/images/navBtn_hover_bg.png*/);background-repeat:no-repeat;}
.headerbtn .main-nav a.active {background-image:url("../images/navBtn_active_bg.png"/*tpa=http://www.55gdw.com/images/navBtn_active_bg.png*/);background-repeat:no-repeat;}
.headerbtn .main-nav a.home {width:405px;background-position:0px 0px;}
.headerbtn .main-nav a.join {width:205px;background-position:-405px 0px;}
.headerbtn .main-nav a.star {width:205px;background-position:-610px 0px;}
.headerbtn .main-nav a.live {width:210px;background-position:-820px 0px;}
.headerbtn .main-nav a.pay {width:210px;background-position:-1030x 0px;}