nav {
	float: right;
	width: 850px;
	height: 80px;
}
nav li {
	width: 120px;
	height: 80px;
	line-height: 80px;
	float: left;
	text-align: center;
	position: relative;
}
nav i {
	display: block;
    width: 0;
    margin-top: -21px;
    height: 2px;
    background: #3460B5;
    transition: all ease .5s;
}
nav li a {
	display: inline-block;
	color: #333;
	font-size: 16px;
}
nav li:hover a {
	color: #3460B5;
}
nav li:hover a i {
	width: 100%;
}
nav dl {
	position: absolute;
	top: 80px;
	left: -150px;
	z-index: 0;
	width: 150%;
	transition: all ease .5s;
	
}
nav li:hover dl {
	display: block;
	left: -30px;
	z-index: 4;
}
nav dd {
	height: 40px;
	line-height: 40px;
	overflow: hidden;
	background: rgba(255,255,255,.9);
	border-bottom: 1px solid #e5e5e5;
}
nav dd a {
	font-size: 14px;
	color: #333!important;
	display: inline-block;
	width: 100%;
	height: 100%;
}
nav dd a:hover {
	background: #467EEA;
	color: #fff!important;
}