.active{
    background-color:#FA7323;
}
#menu2{background: #0E4886;}.nav2{width: 1200px;
    height: 60px;
    margin: 0 auto;/*overflow: hidden;*/}
.nav2 li{line-height:60px;height:60px;text-align:center;width:120px;float:left;position:relative;z-index:999;}
.nav2 li a{display:block;line-height:60px;color:#fff;height:60px;font-size:16px;}
.nav2 li a:hover{color:#fff;text-decoration:none;background-color:#FA7323;}
.nav2 li {
    line-height: 60px;
    height: 60px;
    text-align: center;
    width: 170px;
    float: left;
    position: relative;
    z-index: 999;}
#menu2 {
        /* 兼容 */
        position: -webkit-sticky;
        position: -ms-sticky;
        position: -o-sticky;
        /* 粘性定位*/
        position: sticky;
        left: 0;
        top: 0;
z-index: 99999;
    }

 .submenu {
width: 140px;
height: auto;
background: white;
position: absolute;
top: 60px;
padding: 0 15px;
display: none;
/*border: 1px solid #eeeeee;*/
z-index:9999;
white-space:nowrap;
-webkit-transition: all .5s;
-moz-transition: all .5s;
-o-transition: all .5s;
transition: all .5s;
-ms-transition: all .5s;
}
.submenu a{
position: relative;
display: block;
/*padding: 0 15px;*/
border-bottom: 1px dotted #ddd;
font-size: 15px;
line-height: 45px;
white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
color: #333!important;
}
li:hover .submenu{
display: block;
}
.submenu a:hover {
color: #da0000!important;
background-color:#fff!important;
}
.menu2 li .submenu {
position: absolute;
top: 100%;
z-index: 9999;
overflow: hidden;
padding: 0 55px;
width: auto;
max-height: 0;
background: #fff;
-webkit-transition: all .5s;
-moz-transition: all .5s;
-o-transition: all .5s;
transition: all .5s;
-ms-transition: all .5s;
}
.show_title{padding: 20px 15px 0px 15px;}
.buy_btn{display: inline-block;text-align: center;border-radius: 5px;font-size: 18px;color: #fff; padding: 5px 26px; background-color: #2196F3; margin-right:8px;}
.buy_btn:hover,.buy_btn:focus{text-decoration: none; background-color: #FF5722; color: #fff;}
.show_title a {
    transition: 0.5s;
    -webkit-transition: 0.5s;
    -moz-transition: 0.5s;
text-decoration: none;
}