.stars, .twinkling, .clouds {
	position:absolute;
	display:block;
	top:0; bottom:0;
	left:0; right:0;
	width:100%; height:100%;
}

.stars {
	z-index: 0;
	background: #000 url(../image/stars.png) repeat top center;
}

.twinkling{
	z-index: 1;
	background:transparent url(../image/twinkling.png) repeat top center;
	animation: move-twink-back 200s linear infinite;
}

.clouds{
	z-index: 2;
    background:transparent url(../image/clouds.png) repeat top center;
	animation: move-clouds-back 200s linear infinite;
}

@keyframes move-twink-back {
	from {background-position:0 0;}
	to {background-position:-10000px 5000px;}
}

@keyframes move-clouds-back {
	from {background-position:0 0;}
	to {background-position:10000px 0;}
}