.header_w{
	max-width: 1200px;
	margin: 0 auto;
}

.header_container{
	width: 100%;
	box-sizing: border-box;
	align-items: center;
	display: flex;
	height: 100px;
	position: relative;
	justify-content:space-between;
}

.header_nav{
	display: flex;
	padding-top:20px;
}

.header_nav  >li {
	padding: 0 10px;
	margin: 0 10px;
	font-size: 16px;
	position: relative;	
	text-align: center;
}

.header_nav  >li.on a{
	color: #007fff;
}

.header_container .logo{
	display: block;
	font-size: 18px;
	font-weight: bold;
	color: #333;
	display: flex;
	line-height: 1.5;
	align-items: center;
}


.header_container .logo > div {
	padding-left: 10px;
}


.header_nav >li  a{
	display: block;
}

.header_nav >li.on:after,.header_nav >li:hover::after{
	content: "";
	top: 44px;
	position: absolute;
	height: 4px;
	left: 0;
	display: block;
	width: 100%;
	background-color: #007fff;
}