/* 主体 */
.header{width: 100%; z-index: 999; position: fixed; top:0; left: 0; transition: top 0.5s;}

/* LOGO变化 */
.header .pamicalogo{ width:260px; height:80px; background:url(../../images/logo_w.png) no-repeat; }
.header.active .pamicalogo{ background:url(../../images/logo.png) no-repeat; }

/* 导航变化 */
.header .navigation{           transition: all 0.5s; height:110px; }
.header .navigation .nav-link{ transition: all 0.5s; color:#FFF; }
.header .navigation .nav-link.active{ color:#f08300;}
.header.active .navigation{ background:#FFF; height:auto;}
.header.active .navigation .nav-link{ color:#172231; }
.header.active .navigation .nav-link.active{ color:#f08300;}

.dropdown-item.active{
	color: #f08300;
    background-color: #e9ecef;
}

/* 尺寸变化 */
@media (max-width: 500px){
	.navbar-collapse{ }
	.navbar-light .navbar-nav .nav-link{ color: #172231;}
}
@media (min-width: 1000px){
	.header.active .navigation{height: 80px;}
}