.index {
	width:400px;
	height:auto;
	position:relative;
	float:left;
}
.head {
	width:100%;
	height:45px;
	float:left;
	text-align:center;
}
.head ul {
	margin:0;
	padding:0;
	width:100%;
	height:100%;
	list-style:none;
	position:relative;
}
.head ul li {
	width:80px;
	height:100%;
	line-height:45px;
	float:left;
	font-size:16px;
}
.head ul li a {
	width:100%;
	height:100%;
	display:block;
	text-decoration:none;
	position:relative;
	color:red;
	z-index:999;
}
.off-tale {
	width:100%;
	height:400px;
	background:#999999;
	float:left;
}
.off-tale ul {
	width:100%;
	height:100%;
	margin:0;
	padding:0;
	list-style:none;
}
.off-tale ul li {
	width:100%;
	height:100%;
	float:left;
	display:none;
	color:#fff;
	text-align:left;
}
.off-tale ul li.off {
	display:block;
}
.on {
	background:#000;
	border-radius:10px;
	width:auto;
	height:100%;
	position:absolute;
	top:0;
	left:0;
}