.ad{
	margin: 30px auto;
	position: relative;
}
.ad img{
	width: 100%;
	height: 120px;
}
.ad .hd{
	position: absolute;
	top: 83px;
	right: 62px; 
}
.ad .hd span{
	display: inline-block;
	width: 10px;
	height: 10px;
	border-radius: 50%;
	margin: 0 5px;
	background: #fff;
}
.ad .hd span.on{
	background: #ff6a00;
}