.navs{
	list-style-type:none;
	padding:0;
	width:352px;
	margin:0 auto;
}
	.navs *{
		float:left;
	}
	.navs li{
		padding:2px 1px 0;
		margin:0;
	}

.balloon{
	background:#31374c;
	color:#fff;
	padding:6px 8px;
	position:absolute;
	display:none;
	border-radius:3px;
	box-shadow:0 2px 3px rgba(0,0,0,.2);
	z-index:5;
	font-size:12px;
	line-height:1;
}