html,body,div,p,ul,li,dl,dt,dd,h1,h2,h3,h4 {
	margin:0;
	padding:0;
}
ul,li {
	list-style-type:none;
}
u {
	text-decoration: none
}

/*nav_top*/
.header {
    height: 45px;
}
.top-bar {
	background-color: #f3f3f3;
	text-align: center;
	padding: 2.5em;
}

.nav-content-box a {
	padding-bottom: 3px;
	color: white;
	text-decoration: none;
}

.nav-content-box ul {
	list-style: none;
	padding: 0;
	margin: 0;
}

.nav-content-box li {
	text-align: center;
}

.nav-bar {
	position: fixed;
	overflow: hidden;
	width: 100%;
	height: 45px;
	margin:auto;
	left:0; 
	right:0; 
	top:0; 
	z-index:999;
}

.nav-bar:hover {
	overflow: visible;
	-webkit-transition: all 0.5s ease;
	transition: all 0.5s ease;
}

.nav-bg {
	position: absolute;
	width: 100%;
	height: 260px;
	background: #24619c;
	background: rgba(36,97,158,.95);
	-webkit-transition: .3s;
	transition: .3s;
	z-index: 9999;
}

.nav-top {
	height: 43px;
	width: 100%;
	border-top: 1px solid #5895d5;
	border-bottom: 1px solid #3b92e9;
	background: #459df5;
}

.nav-content {
	position: absolute;
	width: 1440px;
	margin:auto;
	left:0; 
	right:0; 
	top:0; 
}

.nav-content-box {
	position: absolute;
	margin:auto;
	left:0; 
	right:0; 
	top:0; 
	width: 100%;
}

.nav-content-box>li {
	float: left;
	line-height: 43px;
}

.nav-content-box>li:hover {
	background: #19508b;
}

.nav-content-box>li>span>a {
	display: block;
	width: 100%;
	margin: 0;
	height: 41px;
	line-height: 41px;
}

.nav-content-box>li:hover>span>a {
	background: #338ce6;
}

ul>li.nav_index,ul>li.nav_zhonxiaoxue,ul>li.nav_xueli,ul>li.nav_caijing,ul>li.nav_jianzhu,ul>li.nav_yixue,ul>li.nav_gwy,ul>li.nav_zige,ul>li.nav_waiyu,ul>li.nav_jisuanji,ul>li.nav_zuowen,ul>li.nav_wendang,ul>li.nav_zhaopin,ul>li.nav_liuxue,ul>li.nav_peixun,ul>li.nav_wangxiao,ul>li.nav_default {
	width: 80px;
	font-size: 18px;
}

ul>li.index {
	height: 45px;
}

ul.nav-content-box>li>ul {
	border-right: solid 1px #3a6fa2;
	margin: 10px 0 6px
}

ul.nav-content-box>li>ul:after {
	visibility: hidden;
	display: block;
	font-size: 0;
	content: " ";
	clear: both;
	height: 0
}

.nav-content-box>li:hover>ul {
	border-right: none;
	padding-right: 1px;
}

ul.nav-content-box>li>ul>li {
	float: left;
	width: 100%;
	line-height: 2;
	text-align: center;
}

ul.nav-content-box>li>ul>li>a {
	display: block;
	width: 100%;
	font-size: 14px;
	color: white;
}
/*nav_top*/