/*导航部分*/
.nav ul {
 	left: 0;
	opacity: 0;
	background: #d0def9;
	-webkit-border-radius: 0 0 5px 5px;
	-moz-border-radius: 0 0 5px 5px;
	border-radius: 0 0 5px 5px;
	-webkit-transition: opacity .25s ease .1s;
	-moz-transition: opacity .25s ease .1s;
	-o-transition: opacity .25s ease .1s;
	-ms-transition: opacity .25s ease .1s;
	transition: opacity .25s ease .1s;
}

.nav li:hover > ul {
	opacity: 1;
	position: relative;
	z-index: 999;

}
.nav ul li {
	height: 0;
	overflow: hidden;
	padding: 0;
	-webkit-transition: height .25s ease .1s ;
	-moz-transition: height .25s ease .1s;
	-o-transition: height .25s ease .1s;
	-ms-transition: height .25s ease .1s;
	transition: height .25s ease .1s ;
}
.nav li:hover  ul li {
	height: 50px;
	overflow: visible;
	padding: 0;
}
 
.nav li a:hover{
	background-color: #244fa1;
	color: #fff;
	-webkit-border-radius:5px;
	-moz-border-radius:5px;
	border-radius:5px;
}


/*侧边导航部分*/