nav{
	background: #FFFFFF;
	position: fixed;
	bottom: 0;
	left: 0;
	width: 100%;
	z-index: 99;
	color: rgb(228, 228, 228);
    background-color: rgb(255, 255, 255);
    box-shadow: rgba(0, 0, 0, 0.1) 0px 2px 10px 0px;
    border-top:1px solid #DDDDDD;
}
nav ul{
	margin: 0;
	padding: 0;
	display: -webkit-flex;
    display: flex;
    -webkit-justify-content: space-between;
    justify-content: space-between;
}
nav ul li{
	list-style: none;
	width: 25%;
	text-align: center;
	padding-top: 5px;
}
nav ul li a{
	text-decoration: none;
	color: #999;
	display: block;
	font-size: 12px;
}
nav ul li a img{
	height: 15px;
}
nav ul li a p{
	margin: 5px 0 0 0;
}
nav ul li.active a{
	color: #1890ff;
}
nav ul li a:hover{
	text-decoration: none;
	color: #999;
}