/*公共*/
html, body, div, p, ul, li, dl, dt, dd, h1, h2, h3, h4, h5, h6, form, input, select, button, textarea, iframe, table, th, td {
	margin: 0;
	padding: 0;
	font-family: 'Microsoft Yahei', Tahoma, Helvetica, Arial, SimSun, sans-serif;
}
body {
	background: #f1f1f1;
}

li {
	list-style: none;
}

.float-l {
	float: left;
}

.float-r {
	float: right;
}

a,
a:hover {
	text-decoration: none;
	cursor: pointer;
}

.m-t-15 {
	margin-top: 15px;
}

button {
	outline: none !important;
}
/*开始*/
.four-level-menu {
	background: #459df5;
	height: 40px;
}

.first-menu>li {
	float: left;
}

.first-link {
	padding: 10px 20px;
	display: block;
	background: #459df5;
	color: #fff;
	font-weight: normal;
	cursor: pointer;
}

.first-link.hover {
	background: #fff;
	color: #459df5;
}


/*二级菜单*/

.second-menu {
	width: 100%;
	position: absolute;
	left: 0px;
	background: #fff;
	padding: 15px;
	opacity: 1;
	display: none;
}

.second-menu>li {
	float: left;
	width: 120px;
	margin-right: 15px;
	margin-bottom: 10px;
}

.second-link {
	color: #333;
	font-weight: bold;
	border-bottom: 1px solid #ddd;
	padding: 7px 15px;
	display: block;
	margin-bottom: 10px;
}

.second-link:hover {
	color: #459df5;
}

.third-menu>li {
	position: relative;
}

.third-link {
	padding: 5px 15px;
	display: block;
	color: #666;
}

.third-link.hover {
	background: #f3f3f3;
	color: #459df5;
	border-radius: 4px;
}

.fourth-menu {
	position: absolute;
	background: #fff;
	border: 1px solid #ddd;
	padding: 10px 15px;
	left: 125px;
	display: none;
	top: 0px;
	width: 150px;
	z-index: 999;
	border-radius: 6px;
	box-shadow: 1px 1px 7px #ddd;
}

.fourth-menu:before,
.fourth-menu:after {
	content: "";
	display: block;
	border-width: 10px;
	position: absolute;
	top: 8px;
	left: -20px;
	border-style: solid dashed dashed;
	border-color: transparent #ddd transparent transparent;
	font-size: 0;
	line-height: 0;
}

.fourth-menu:after {
	top: 10px;
	left: -16px;
	border-width: 8px;
	border-color: transparent #fff transparent transparent;
}

.fourth-menu a {
	display: block;
	color: #666;
	padding: 4px 0px;
}

.fourth-menu a:hover {
	color: #459df5;
	text-decoration: underline;   		
}