.nav_father{
	top: 0;
	width: 100%;
	position: fixed;
	background: #fff;
	margin-bottom: 90px;
	z-index: 9999;
}

.nav{
	height: 90px;
	width: 1200px;
	margin: 0 auto;
	display: flex;
	background-color: white;
}

.nav_phone{
	display: none;
}

.logo{
	height: 40px;
	margin-top: 25px;
	float: left;
}

.hyg-nav{
	margin-left: 40px;
	width: 652px;
	display: flex;
	justify-content: space-between;
}


.hyg-nav li{
	color: white;
	line-height: 50px;
	min-width: 64px;
	margin: 30px 0 25px;
}

li a:hover {
	color: #2256AA;
}

li .active{
	color: #2256AA;
	display: inline-block;
	height: 40px;
	border-bottom: 2px solid #2256AA;
}

.hyg-400{
	height: 20px;
	margin-left: 40px;
	margin-top: 45px;
}

.phone{
	margin-top: 20px;
	margin-left: 10px;
	line-height: 70px;
	font-size: 20px;
}

.hyg-nav-select{
	width: 100px;
	height: 36px;
	font-size: 16px;
	line-height: 36px;
	margin-top: 34px;
	margin-left: 45px;
}

.hyg-nav-option{
	height: 36px;
	font-size: 16px;
	line-height: 36px;
}

@media screen and (max-width: 750px) {
	.nav {
		display: none;
	}

	.nav_phone{
		width: 100%;
		display:block;
		height: 50px;
		padding: 4px 0;
		background-color: #ffffff;
		position: fixed;
		top: 0;
		z-index: 999;
		box-sizing: content-box;
	}

	.logo_phone{
		height: 30px;
		margin: 10px 20px;
	}

	.logo_menu{
		right: 10px;
		top: 10px;
		position: absolute;
	}

	.menu{
		top: 45px;
		right: 10px;
		position: absolute;
		background-color: #2F2F2F;
		z-index: 999;
		display: none;
	}

	.menu li {
		padding: 10px 0;
		border: 1px solid #444A46;
		text-align: center;
	}

	.menu_p {
		color: #ffffff;
		display: inline-block;
		width: 120px;
		font-size: 14px;
	}

	.menu_lange{
		width: 50%;
		color: #cccccc;
		text-align: center;
	}

	.menu_lange:first-child{
		border-right: 1px solid #cccccc;
	}

	li .active_phone{
		color: #2256AA;
	}

}