<div class="background-container">
<img src="https://s3-us-west-2.amazonaws.com/s.cdpn.io/1231630/moon2.png" alt="">
<div class="stars"></div>
<div class="twinkling"></div>
<div class="clouds"></div>


@keyframes move-background {
  from {
		-webkit-transform: translate3d(0px, 0px, 0px);
	}
	to { 
		-webkit-transform: translate3d(1000px, 0px, 0px);
	}
}
@-webkit-keyframes move-background {
  from {
		-webkit-transform: translate3d(0px, 0px, 0px);
	}
	to { 
		-webkit-transform: translate3d(1000px, 0px, 0px);
	}
}

@-moz-keyframes move-background {    
	from {
		-webkit-transform: translate3d(0px, 0px, 0px);
	}
	to { 
		-webkit-transform: translate3d(1000px, 0px, 0px);
	}
}

    @-webkit-keyframes move-background {
	from {
		-webkit-transform: translate3d(0px, 0px, 0px);
	}
	to { 
		-webkit-transform: translate3d(1000px, 0px, 0px);
	}
}

.background-container{
	position: fixed;
	top: 0;
	left:0;
	bottom: 0;
	right: 0;
}

.stars {
 background: black url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/1231630/stars.png) repeat;
 position: absolute;
	top: 0;
	bottom: 0;
	left: 0;
	right: 0;
	display: block;
  	z-index: 0;
}

.twinkling{
	width:10000px;
	height: 100%;
	background: transparent url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/1231630/twinkling.png") repeat;
	background-size: 1000px 1000px;
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 2;
    
    -moz-animation:move-background 70s linear infinite;
  -ms-animation:move-background 70s linear infinite;
  -o-animation:move-background 70s linear infinite;
  -webkit-animation:move-background 70s linear infinite;
  animation:move-background 70s linear infinite;
	
}

.clouds{
	width:10000px;
	height: 100%;
	background: transparent url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/1231630/clouds_repeat.png") repeat;
	background-size: 1000px 1000px;
    position: absolute;
    right: 0;
    top: 0;
    bottom: 0;
    z-index: 3;

   -moz-animation:move-background 150s linear infinite;
  -ms-animation:move-background 150s linear infinite;
  -o-animation:move-background 150s linear infinite;
  -webkit-animation:move-background 150s linear infinite;
  animation:move-background 150s linear infinite;
}
img{
  height: 70vh;
  width:70vh;
  position: absolute;
  z-index: 3;
  right: 20px;
}

External CSS

This Pen doesn't use any external CSS resources.

External JavaScript

This Pen doesn't use any external JavaScript resources.