/*µ×²¿¹Ì¶¨µ¼º½*/
*{
	margin:0;
	padding:0;
	list-style: none;
}
footer{
	position: fixed;
	bottom:0;left: 0;
	width: 100%;height: 50px;
	border-top:1px solid #ddd;
	background:#F0F0F0;
	opacity: 1; 
}
.bottom_nav{
	width: 100%;
}
.bottom_nav li{
	float: left;
	width: 25%;height: 100%;
}
.bottom_nav li a{
	display: block;
	width: 100%;height: 100%;
	text-align: center;text-decoration: none;
	color: #989DBB;
}
.bottom_nav li a>img{
	margin-top: 2px;
	width: 25px;
}
.bottom_nav li:nth-child(4) a>img{
	width: 23px;
}
.bottom_nav li a>span{
	display: block;
	font-size: 11px;
	color: #989DBB;
}