.slider{
	display:block;
	position:relative;
	margin:auto;
	width:100%;
	max-width:960px;
	max-height:540px;
	overflow:hidden;	
}

.boton{
	position:absolute;
	display:block;
	bottom:30px;
	margin:0;
	padding:0;
	z-index:999;
	cursor:pointer;
	opacity:0;
}

.boton:nth-child(1){
	left:30px;
}
.boton:nth-child(3){
	left:60px;
}
.boton:nth-child(5){
	left:90px;
}
.boton:nth-child(7){
	left:120px;
}

.slider label{
	position:absolute;
	bottom:30px;
	width:12px;
	height:12px;
	background: rgba (50,50,50,.5);
	border-radius:7px;
	z-index:100;
	border: 1px solid #777;
}

.slider label:nth-child(2){
	left:30px;
}
.slider label:nth-child(4){
	left:60px;
}
.slider label:nth-child(6){
	left:90px;
}
.slider label:nth-child(8){
	left:120px;
}

.boton:checked + label{
	background: rgba (0,0,0,.6);
	border-color: #eee;
}

.contenedor-img img {
	display: block;
	float: left;
}


.cuatro-imagenes {
	width: 400%;
}

.cuatro-imagenes img {
	width: 25%;
}

.contenedor-img {
	position: relative;
	left: 0;
	-webkit-transition: left .3s ease-in;
	-ms-transition: left .3s ease-in;
	-moz-transition: left .3s ease-in;
	-o-transition: left .3s ease-in;
	transition: left .3s ease-in;
}

.boton:nth-child(1):checked ~ .contenedor-img {
	left: 0;
}

.boton:nth-child(3):checked ~ .contenedor-img {
	left: -100%;
}

.boton:nth-child(5):checked ~ .contenedor-img {
	left: -200%;
}

.boton:nth-child(7):checked ~ .contenedor-img {
	left: -300%;
}