* {
	margin: 0px;
	padding: 0px;
}
#body{
	width: 500px;
	height: 300px;
	position:relative;
	/*float:left;*/
	margin: 0 auto;
	margin-top: 200px;
}
#content {
	overflow: hidden;
	width: 400px;
	height: 300px;
	margin: 0 auto;
	border: 3px solid black;
}
.photo {
	list-style: none;
	height: 300px;
	width: 1800px;
	position:relative;
	
}
.photo li {
	float: left;
}

.photo li:nth-child(1){
	margin-left: -400px;
}
.photo li:nth-child(2){
	margin-left: 0px;
}



.photo  li img {
	width: 400px;
	height: 300px;
	
}
#nav a.prev,#nav a.next{
	width:30px;
	height:30px;
	position:absolute;
	top:50%;
	/*margin-top:-15px;*/
	outline:none;
	cursor:pointer;
}
#nav a.next {
	background: url(images/right.png);
	right: 0px;
}
#nav a.prev {
	background: url(images/left.png);
	left: 0px;
}