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CSS

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CSS preprocessors help make authoring CSS easier. All of them offer things like variables and mixins to provide convenient abstractions.

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CSS Base

About CSS Base

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JavaScript

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HTML 

              
                          <section class="blackie">
            <div class="stars">
              <div class="pos1 st1"></div>
              <div class="pos2 st1"></div>
              <div class="pos3 st1"></div>
              <div class="pos4 st1"></div>
              <div class="pos5 st1"></div>
              <div class="pos6 st1"></div>
              <div class="pos7 st1"></div>
            </div>
            <div class="moon"></div>
            <div class="cloud blackie">
              <div class="cloud1"><div></div></div>
              <div class="cloud2"><div></div></div>
              <div class="cloud3"><div></div></div>
            </div>
            <div class="mountain">
              <div class="mount1"></div>
            </div>
            <div class="river">
              
            </div>
            <div class="plants">
            </div>
                 
          </section>
!

CSS 

              
                @import "compass/css3";

@import "compass";
$cloud:#3af;
$cloud:rgba(51, 170, 255, 1);

@mixin keyframes($animationName) {
    @-webkit-keyframes #{$animationName} {
        @content;
    }
    @-moz-keyframes #{$animationName} {
        @content;
    }
    @-o-keyframes #{$animationName} {
        @content;
    }
    @keyframes #{$animationName} {
        @content;
    }
}
@mixin transition($transition-property, $transition-time, $method) {
    -webkit-transition: $transition-property $transition-time $method;
    -moz-transition: $transition-property $transition-time $method;
    -ms-transition: $transition-property $transition-time $method;
    -o-transition: $transition-property $transition-time $method;
    transition: $transition-property $transition-time $method;
}
html, body{
	overflow-x:hidden;
	margin:0;padding:0;
}
.blackie{
  background: #555;
}
section{
	display:block;
	overflow:hidden;
	height:600px;
	width:100%;
}
.cloud{
	width:100%;
	overflow:hidden;
	& > div{
	  position: absolute;
	  width: 100%;
	  height: 300px;
	}
	.cloud1{
	  border-radius: 50%;
	  margin-top: 120px;
	  @include experimental('animation', move-clouds, webkit, moz, o, ms, not khtml);
	  @include experimental('animation-duration', 25s, webkit, moz, o, ms, not khtml);
	  $animation-support: webkit, moz, o, ms, not khtml;
	  @include experimental('animation-iteration-count', infinite, $animation-support...);
	  @include experimental('animation-timing-function', ease-out, $animation-support...);
	  	& div{
		  border-radius: 50%;
		  width: 150px;
		  height: 120px;
		  background-color: $cloud;
		  @include background-image(radial-gradient(45px 45px, #3af 10px, dodgerblue 30px));
		  position: absolute;
		  
		}
		& div:after{
		  content: " ";
		  border-radius: 70%;
		  width: 180px;
		  height: 110px;
		  background-color: $cloud;
		  @include background-image(radial-gradient(45px 45px, #39f 10px, dodgerblue 30px));
		  position: absolute;
		  margin-left: 50px;
		}
		& div:before{
		  content: " ";
		  border-radius: 50%;
		  width: 120px;
		  height: 70px;
		  background-color: $cloud;
		  @include background-image(radial-gradient(45px 45px, #2ea0ff 10px, #1e90ff 30px));
		  position: absolute;
		  margin-left: 90px;
		  margin-top: 80px;
		}
	}.cloud3{
	  border-radius: 50%;
	  margin-top: 50px;
	  @include experimental('animation', move-clouds3, webkit, moz, o, ms, not khtml);
	  @include experimental('animation-duration', 20s, webkit, moz, o, ms, not khtml);
	  $animation-support: webkit, moz, o, ms, not khtml;
	  @include experimental('animation-iteration-count', infinite, $animation-support...);
	  @include experimental('animation-timing-function', linear, $animation-support...);
	  	& div{
		  border-radius: 60%;
		  width: 140px;
		  height: 110px;
		  background-color: $cloud;
		  @include background-image(radial-gradient(45px 45px, #3af 10px, dodgerblue 30px));
		  position: absolute;
		  
		}
		& div:after{
		  content: " ";
		  border-radius: 78%;
		  width: 180px;
		  height: 110px;
		  background-color: $cloud;
		  position: absolute;
		  @include background-image(radial-gradient(45px 45px, #39f 10px, dodgerblue 30px));
		  margin-left: 40px;
		}
		& div:before{
		  content: " ";
		  border-radius: 50%;
		  width: 150px;
		  height: 70px;
		  background-color: $cloud;
		  position: absolute;
		  margin-left: 50px;
		  margin-top: 70px;
		}
	}
	.cloud2{
		margin-top: 100px;
		@include experimental('animation', move-clouds-2, webkit, moz, o, ms, not khtml);
		@include experimental('animation-duration', 30s, webkit, moz, o, ms, not khtml);
		$animation-support: webkit, moz, o, ms, not khtml;
		@include experimental('animation-iteration-count', infinite, $animation-support...);
		@include experimental('animation-timing-function', linear, $animation-support...);
		& div{
		  border-radius: 50%;
		  width: 190px;
		  height: 120px;
		  background-color: $cloud;
		  @include background-image(radial-gradient(45px 45px, hsl(210,100%,55%) 15px, #1e90ff 30px));		  
		  position: absolute;
		  
		}
		& div:after{
		  content: " ";
		  border-radius: 50%;
		  width: 180px;
		  height: 90px;
		  background-color: hsl(210,100%,45%);
		  @include background-image(radial-gradient(45px 45px, #39f 10px, dodgerblue 30px));
		  position: absolute;
		  margin-left: 60px;
		  margin-top: -20px;
		}
		& div:before{
		  content: " ";
		  border-radius: 50%;
		  width: 180px;
		  height: 80px;
		  background-color: $cloud;
		  position: absolute;
		  margin-left: 40px;
		  margin-top: 50px;
		}
	}
}

@include keyframes(move-clouds) {
  0% {
    @include transform( translateX(100%) );
  }

  100% {
    @include transform( translateX(-25%) );
  }
}

@include keyframes(move-clouds3) {
  0% {
    @include transform( translateX(30%) );
    opacity:1;
  }

  60% {
    @include transform( translateX(-25%) );
    opacity:1;
  }
  61% {
    @include transform( translateX(-25%) );
    opacity:0;
    display:none;    
  }

  62% {
    @include transform( translateX(100%) );
    opacity:0;
    display:none;    
  }
  63% {
    @include transform( translateX(100%) );
    opacity:1;
    display:block;    
  }
  100% {
    @include transform( translateX(30%) );
    opacity:1;
  }
}


@include keyframes(move-clouds-2) {
  0% {
    @include transform( translateX(10%) );
    opacity:1;
  }

  10% {
    @include transform( translateX(-25%) );
    opacity:1;
  }
  11% {
    @include transform( translateX(-25%) );
    opacity:0;
    display:none;    
  }

  12% {
    @include transform( translateX(100%) );
    opacity:0;
    display:none;    
  }
  13% {
    @include transform( translateX(100%) );
    opacity:1;
    display:block;    
  }
  100% {
    @include transform( translateX(10%) );
    opacity:1;
  }
}

.mountain{
	height:400px;
	width:100%;
	overflow:hidden;

	& div.mount1{
		background-color:#989;
		height:400px;
		margin-top:200px;
		width:400px;
		@include transform( rotate(40deg) );
	    &:before{
			background-color:#989;
	    	content:" ";
			margin-top:-200px;
	    	height:400px;
			margin-left:400px;
			width:400px;
			position:absolute;
	    }
	}
}
.river{
	border-top:1px solid #999;
	width:100%;
	height:200px;
	background-color:#78f;
}
.moon{
	position:absolute;
	top:30px;
	right:40px;
	height:120px;
	width:120px;
	border-radius:100%;
	border:40px solid #fffff1;
	box-shadow:0 0 100px 20px #ffffc0;
	background-color:#fffff1;
}
.padding-0{
	padding:0px;
}
.stars{
	.pos1{
		@include transform( scale(.3) );
		margin:50px;
		@include experimental('animation', star-blinking1, webkit, moz, o, ms, not khtml);
		@include experimental('animation-duration', .8s, webkit, moz, o, ms, not khtml);
		$animation-support: webkit, moz, o, ms, not khtml;
		@include experimental('animation-iteration-count', infinite, $animation-support...);
		@include experimental('animation-timing-function', linear, $animation-support...);
	}
	.pos2{
		@include transform( scale(.6) );
		margin:30px 60%;
		@include experimental('animation', star-blinking2, webkit, moz, o, ms, not khtml);
		@include experimental('animation-duration', 1s, webkit, moz, o, ms, not khtml);
		$animation-support: webkit, moz, o, ms, not khtml;
		@include experimental('animation-iteration-count', infinite, $animation-support...);
		@include experimental('animation-timing-function', linear, $animation-support...);
	}
	.pos3{
		margin:60px 15%;
		@include transform( scale(.8) );
		@include experimental('animation', star-blinking3, webkit, moz, o, ms, not khtml);
		@include experimental('animation-duration', .9s, webkit, moz, o, ms, not khtml);
		$animation-support: webkit, moz, o, ms, not khtml;
		@include experimental('animation-iteration-count', infinite, $animation-support...);
		@include experimental('animation-timing-function', linear, $animation-support...);
	}
	.pos4{
		margin:50px 30%;
		@include transform( scale(.7) );
		@include experimental('animation', star-blinking4, webkit, moz, o, ms, not khtml);
		@include experimental('animation-duration', 1.1s, webkit, moz, o, ms, not khtml);
		$animation-support: webkit, moz, o, ms, not khtml;
		@include experimental('animation-iteration-count', infinite, $animation-support...);
		@include experimental('animation-timing-function', linear, $animation-support...);
	}	
	.pos5{
		margin:120px 10%;
		@include transform( scale(1) );
		@include experimental('animation', star-blinking5, webkit, moz, o, ms, not khtml);
		@include experimental('animation-duration', 1s, webkit, moz, o, ms, not khtml);
		$animation-support: webkit, moz, o, ms, not khtml;
		@include experimental('animation-iteration-count', infinite, $animation-support...);
		@include experimental('animation-timing-function', linear, $animation-support...);	
	}
	.pos6{
		margin:140px 35%;
		@include transform( scale(.9) );
		@include experimental('animation', star-blinking6, webkit, moz, o, ms, not khtml);
		@include experimental('animation-duration', .7s, webkit, moz, o, ms, not khtml);
		$animation-support: webkit, moz, o, ms, not khtml;
		@include experimental('animation-iteration-count', infinite, $animation-support...);
		@include experimental('animation-timing-function', linear, $animation-support...);
	}	
	.pos7{
		margin:100px 50%;
		@include transform( scale(.5) );
		@include experimental('animation', star-blinking7, webkit, moz, o, ms, not khtml);
		@include experimental('animation-duration', 1.2s, webkit, moz, o, ms, not khtml);
		$animation-support: webkit, moz, o, ms, not khtml;
		@include experimental('animation-iteration-count', infinite, $animation-support...);
		@include experimental('animation-timing-function', linear, $animation-support...);	
	}	
	.st1{
		position:absolute;
		&:after{
			content:" ";
			position:absolute;
			width:0;
			height:0;
			border:0;
			border-left:10px solid transparent;
			border-right:10px solid transparent;
			border-top:20px solid #ff8;
			@include transform-origin( 50%, 50%);
			@include transform( rotate(60deg) );
		}
		&:before{
			content:" ";
			position:absolute;
			width:0;
			height:0;
			margin-top:-4px;
			border:0;
			border-left:10px solid transparent;
			border-right:10px solid transparent;
			border-top:20px solid #ff8;
			@include transform-origin( 50%, 50%);
			@include transform( rotate(120deg) );
		}
	}
}
@include keyframes(star-blinking1) {
  0% {
    @include transform( scale(.3) );
	opacity:.8;
	@include transform-origin( 50%, 50%);
  }
  50% {
    @include transform-origin( 50%, 50%);
	@include transform( scale(.4) );
	opacity:.9;
  }
  100% {
    @include transform( scale(.3) );
	@include transform-origin( 50%, 50%);
 	opacity:.8;
 }
}
@include keyframes(star-blinking2) {
  0% {
    @include transform( scale(.6) );
	opacity:.8;
	@include transform-origin( 50%, 50%);
  }
  50% {
    @include transform-origin( 50%, 50%);
	@include transform( scale(.7) );
	opacity:.9;
  }
  100% {
    @include transform( scale(.6) );
	@include transform-origin( 50%, 50%);
 	opacity:.8;
 }
}
@include keyframes(star-blinking3) {
  0% {
    @include transform( scale(.8) );
	opacity:.8;
	@include transform-origin( 50%, 50%);
  }
  50% {
    @include transform-origin( 50%, 50%);
	@include transform( scale(.7) );
	opacity:.9;
  }
  100% {
    @include transform( scale(.8) );
	@include transform-origin( 50%, 50%);
 	opacity:.8;
 }
}
@include keyframes(star-blinking4) {
  0% {
    @include transform( scale(.7) );
	opacity:.8;
	@include transform-origin( 50%, 50%);
  }
  50% {
    @include transform-origin( 50%, 50%);
	@include transform( scale(.6) );
	opacity:.9;
  }
  100% {
    @include transform( scale(.7) );
	@include transform-origin( 50%, 50%);
 	opacity:.8;
 }
}
@include keyframes(star-blinking5) {
  0% {
    @include transform( scale(1) );
	opacity:.8;
	@include transform-origin( 50%, 50%);
  }
  50% {
    @include transform-origin( 50%, 50%);
	@include transform( scale(.9) );
	opacity:.9;
  }
  100% {
    @include transform( scale(1) );
	@include transform-origin( 50%, 50%);
 	opacity:.8;
 }
}
@include keyframes(star-blinking6) {
  0% {
    @include transform( scale(.9) );
	opacity:.8;
	@include transform-origin( 50%, 50%);
  }
  50% {
    @include transform-origin( 50%, 50%);
	@include transform( scale(.8) );
	opacity:.9;
  }
  100% {
    @include transform( scale(.9) );
	@include transform-origin( 50%, 50%);
 	opacity:.8;
 }
}
@include keyframes(star-blinking7) {
  0% {
    @include transform( scale(.5) );
	opacity:.8;
	@include transform-origin( 50%, 50%);
  }
  50% {
    @include transform-origin( 50%, 50%);
	@include transform( scale(.6) );
	opacity:.9;
  }
  100% {
    @include transform( scale(.5) );
	@include transform-origin( 50%, 50%);
 	opacity:.8;
 }
}
.plants{
  clear:both;
  height:100px;
  border:5px dashed #9fa;
  width:100%;
  background-color:#9fa;
}
!

JS
!
999px

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