.nav{ width:1110px; height:57px; margin:auto; z-index:999; border:1px solid #990000;box-sizing: border-box; }
.nav .nav_list{width:1110px; margin:auto;height:55px;}
.nav li{float:left;height:55px; width:157.3px;line-height:55px;position:relative;margin:0 1px 0 0;background:#f3f3f3;}
.nav li.last{background:none;}
.nav li a{float:left;display:block; width:157.3px; height:55px; text-align:center; line-height:55px;color:#990000;}
.nav li a:hover{background: #990000; text-decoration:none;}
.nav li a span{float:left;display:block; width:157.3px; height:55px; line-height:55px;cursor:pointer; font-family:"Microsoft YaHei";text-align:center;font-size:18px;}
.nav li a.selected{ background:#990000; color:#fff;}
.nav li a.selected2{ background:#990000;color:#fff;}/*===一级当前栏目样式=*/

/*========以下二级导航样式=*/
.nav li.selected .submenu{display:block;}
.nav li .submenu{display:none;position:absolute;top:56px;left:0px; background:rgba(153,0,0,1.0);}
.nav li .submenu{width:100%;}
.nav li .submenu{ z-index:999;}
.nav li .submenu li{float:left;padding:0;background:none;height:50px; line-height:50px;}
.nav li .submenu li a{float:none;padding:0;text-align: center; font-family:"Microsoft YaHei";height:50px;line-height:50px;background:none; color:#fff; padding:0px;}
.nav li .submenu li a:hover{background: #cc0000;font-weight:normal; color:#fff; text-decoration:none;}