* {
	margin:0;
	padding:0;
}
ul,ol {
	list-style:none;
}
.box {
	width:640px;
	height:320px;
	margin:0px auto;
	position:relative;
}
.ul_img {
	position:absolute;
}
.ul_img li {
	width:640px;
	height:320px;
}
.ul_img li img {
	width:100%;
	height:100%;
}
.ul_text {
	position:absolute;
	right:10px;
	bottom:10px;
}
.ul_text li {
	float:left;
	width:20px;
	height:20px;
	border-radius:20px;
	background:darkgrey;
	text-align:center;
	line-height:20px;
	font-size:14px;
	margin-left:5px;
	cursor:pointer;
}
.ul_text li.hover {
	background:darkcyan;
	color:white;
}