.header{
	width: 100%;
    height: 90px;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 999;
    background-color: #fff;
}
.head-nav{
	position: relative;
    width: 1240px;
    height: 100%;
    margin: 0 auto;

}
.logo{
	margin-top: 10px;
	width:392px;
	height: 70px;
}
.primary-navigation{
	position: absolute;
    bottom: 0;
    right: 0;
    float: right;
    height: 90px;
    width: 812px;
}
.primary-navigation ul li :hover{
	color: #00b8f8;
}
.head-ul{
	width: 100%;
	height: 100%;
	display: flex;
	flex-direction: row;
	justify-content: space-between;
	align-items: center;
}
.head-li{
	color: #1f2631;
	float: left;
	width: 100px;
	height: 90px;
	text-align: center;
	line-height: 90px;	
}
.head-li :hover{
	border-bottom: 2px solid #00b8f8;
	color: #00b8f8;
	
}
.head-li-clicked{
	border-bottom: 4px solid #00b8f8;
	color: #00b8f8;
	float: left;
	width: 100px;
	height: 90px;
	text-align: center;
	line-height: 90px;
}
.nav-active{
	
	/*font-size: 25px;*/
	width: 62px;
	height: 60px;
	color: #999;
	
}
.header a:link, a:hover{
	text-decoration: none;

	display: block;/*给a标签设置成块级元素*/
	width: 100%;
	height: 100%;
	
}
a{
	text-decoration: none;
}
/*页头部分css*/