* {
	padding:0;
	margin:0;
	list-style:none;
	border:0;
}
.all {
	width:500px;
	height:200px;
	padding:7px;
	border:1px solid #ccc;
	margin:100px auto;
	position:relative;
}
.screen {
	width:500px;
	height:200px;
	overflow:hidden;
	position:relative;
}
.screen li {
	width:500px;
	height:200px;
	overflow:hidden;
	float:left;
}
.screen ul {
	position:absolute;
	left:0;
	top:0px;
	width:3000px;
}
.all ol {
	position:absolute;
	right:10px;
	bottom:10px;
	line-height:20px;
	text-align:center;
}
.all ol li {
	float:left;
	width:20px;
	height:20px;
	background:#fff;
	border:1px solid #ccc;
	margin-left:10px;
	cursor:pointer;
}
.all ol li.current {
	background:yellow;
}
#arr {
	display:none;
}
#arr span {
	width:40px;
	height:40px;
	position:absolute;
	left:5px;
	top:50%;
	margin-top:-20px;
	background:#000;
	cursor:pointer;
	line-height:40px;
	text-align:center;
	font-weight:bold;
	font-family:'黑体';
	font-size:30px;
	color:#fff;
	opacity:0.3;
	border:1px solid #fff;
}
#arr #right {
	right:5px;
	left:auto;
}