.wraper{ width:1000px; height:130px; background:#f3f3f3; margin:0 auto; overflow: hidden;}
.nav{ position:relative; width:100%; height:40px; background:#f3f3f3; top:80px;}
.nav-item{ position:relative; float:left; width:130px; height:40px; line-height:40px; text-align:center; font-size:14px; z-index:1; border-right:1px solid #cccccc;}
.nav ul{ margin-left:80px;}
.nav-item a{ display:block; height:40px; color:#333; }
.nav-item a:hover{ color:blue}
.move-bg{ display:block;position:absolute;left:0;top:-80px; width:561px; height:80px; z-index:0;}