#header{width:100%;height:75px;min-width:1200px;background:rgba(0,0,0,.16);border:1px solid rgba(255,255,255,.2);position:fixed;left:0;top:0;z-index:999}
#header .header-logo{width:189px;height:44px;float:left;margin:19px 0 12px 37px}
#header .header-nav{float:right;margin-right:60px}
#header .header-nav .header-nav-item{width:100px;height:75px;line-height:75px;float:left;font-size:16px;font-weight:500;color:#fff;cursor:pointer;position:relative;margin:0 45px}
#header .header-nav .header-nav-item>a{display:block;width:100%;height:100%;float:left;font-size:16px;font-weight:500;color:#fff;text-align:center}
#header .header-nav .header-nav-item .header-nav-child{display:none;width:120px;overflow:hidden;position:absolute;left:-10px;top:75px;background-color:rgba(0,0,0,.27)}
#header .header-nav .header-nav-item .header-nav-child li{width:100%;height:34px}
#header .header-nav .header-nav-item .header-nav-child li a{display:block;width:100%;height:34px;font-size:16px;font-weight:400;color:#fff;line-height:34px;text-align:center}
#header .header-nav .header-nav-item .header-nav-child li a:hover{background-color:#c52d2c}
@media screen and (max-width:1500px){
#header .header-nav .header-nav-item{width:80px}
#header .header-nav .header-nav-item .header-nav-child{left:-25px}
}