.slider{
	width:717px;
	height:140px;
	margin:0 auto;
	position:relative;
}
.slider ul{
	margin:0;
	padding:0;
	list-style:none;
}
.slider ul li{
	width:717px;
	height:140px;
	position:absolute;
	top:0;
	left:0;
	animation-iteration-count:infinite;
	animation-duration:24s;
}


.slider ul li:nth-child(1){
	animation-name:slider;
	animation-delay:-3s;
}
.slider ul li:nth-child(2){
	animation-name:slider;
	animation-delay:5s;
	opacity:0;
}
.slider ul li:nth-child(3){
	animation-name:slider;
	animation-delay:13s;
	opacity:0;
}


@keyframes slider{
	0%{
		opacity:0;
	}
	20.83%{
		opacity:1;
	}
	33.33%{
		opacity:1;
	}
	45.83%{
		opacity:0;
	}
	100%{
		opacity:0;
	}	
}