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HTML 

              
                - for (var x = 0; x < 8; x++)
  .cloud(class='cloud-'+x)
  
.c9
  .c9-eye-front
  .c9-eye-back
  .c9-mouse
  .c9-404
.c9-shadow
!

CSS 

              
                @import "compass/css3";

html {
	height:100%;
	overflow: hidden;
}
body {
	background-color: #f0f9ff; // Old browsers
  @include filter-gradient(#f0f9ff, #a1dbff, vertical); // IE6-8
  // IE9 SVG, needs conditional override of 'filter' to 'none'
  $experimental-support-for-svg: true;
  @include background-image(linear-gradient(top, #f0f9ff 40%,#a1dbff 100%));

	min-height:100%;
}
.cloud {
	background:url('http://ericnkatz.com/c9/pieces/c9-logo.png') no-repeat;
	width:159px;
	height:114px;
	position:absolute;
	top:250px;
	left:250px;
	animation: 55s cloudfloat infinite;
  &.cloud-2 {
    transform:scale(0.5) translate(-455px, -300px);
  }
  &.cloud-3 {  
    transform:scale(1.35) translate(-550px, -350px);
  }
  &.cloud-4 {
    transform:scale(0.5) translate(255px, 400px);
  }
  &.cloud-5 {
    transform:scale(0.9) translate(400px, 200px);
  }
  &.cloud-6 {
    transform:scale(0.3) translate(700px, -390px);
  }
  &.cloud-7 {
    transform:scale(1.7) translate(800px, -100px);
  }
}
.c9 {
	background:url('http://ericnkatz.com/c9/pieces/c9-bg.png') no-repeat;
	width:975px;
	height:686px;
	margin:0 auto;
	position:relative;
	display: block;
	z-index:30;

	animation: 9.5s cloudhover infinite;
}
.c9-shadow {
	display: block;
	width:650px;
	height:35px;
	margin:0 auto;
	box-shadow:-35px -55px 40px rgba(0,0,0,0.35);
	position:relative;
	top:85px;
	left:5%;
	border-radius: 50%;
	z-index:25;

	animation: 9.5s cloudshadow infinite;
}
.c9-eye-front {
	background:url('http://ericnkatz.com/c9/pieces/c9-eye-front.png') no-repeat;
	width:83px;
	height:39px;
	position:absolute;
	top: 108px;
	left: 516px;

	animation: 5s fronteye infinite;

}
.c9-eye-back {
	background:url('http://ericnkatz.com/c9/pieces/c9-eye-back.png') no-repeat;
	width: 22px;
	height: 23px;
	position:absolute;
	top: 111px;
	left: 490px;

	animation: 5s backeye infinite;
}

.c9-mouse {
	background:url('http://ericnkatz.com/c9/pieces/c9-mouse.png') no-repeat;
	width:43px;
	height:102px;
	position:absolute;
	top: 493px;
	left: 535px;

	animation: 5s mousestring infinite;
}
.c9-404 {
	background:url('http://ericnkatz.com/c9/pieces/c9-404.png') no-repeat;
	width:273px;
	height:auto;
	position:absolute;
	top:450px;
	left:600px;
	padding-top:126px;
	font-weight:bold;
	font-size:1.1em;
	font-family: tahoma;
	padding-left: 2em;
	text-shadow:1px 0 #fff;

	transform:rotate(-2deg);
}

@keyframes mousestring {
	0% { 
		top:582px;
	}
	60% { 
		top:493px;
	}
	100% { 
		top:582px;		
	}
}

@keyframes fronteye {
	0% { 
		transform: rotate(9deg); 
		height:10px;
		opacity:0;
	}
	50% { 
		transform: rotate(9deg); 
		height:45px;
		opacity:1;
	}
	100% { 
		transform: rotate(9deg); 
		height:10px;
		opacity:0;
	}
}

@keyframes backeye {
	0% { 
		height:2px;
		opacity:0;
	}
	50% { 
		height:22px;
		opacity:1;
	}
	90% { 
		height:2px;
		opacity:0;
	}
	100% { 
		height:2px;
		opacity:0;
	}
}

@keyframes cloudfloat {
	0% { 
		top:250px;
		left:250px;

	}
	20% { 
		left:66%;
		top:66%;
	}
	50% { 
		left:130%;
		top:80%;
	}
	90% { 
		left:40%;
		top:95%;
	}
	100% { 
		top:250px;
		left:250px;
	}
}


@keyframes cloudhover {
	0% { 
		transform:translate(0, 0) scale(0.95) rotate(2deg);

	}
	50% { 
		transform:translate(0, 25px) rotate(2deg);
	}
	100% { 
		transform:translate(0, 0) scale(0.95) rotate(2deg);
	}
}

@keyframes cloudshadow {
	0% { 
		transform:translate(0, 0);

	}
	50% { 
		transform:translate(0, -25px) scaleY(1.45) scaleX(1.05);
		height:25px;
		width:750px;
		box-shadow:-35px -45px 15px rgba(0,0,0,0.85);
	}
	100% { 
		transform:translate(0, 0);
	}
}
!

JS 

              
                /*

UPDATED: changed to Jade/Sass for markup, feels a lot cleaner now.


Decided to play around with some css animations. Created a 404 animation of a graphic found on the cloud9.gg website. Probably a bunch more to do before its viable. This is 100% non-official. I don't have anything to do with the competitive league of legends team. Just a fan of the current North American Champions. =)
*/
!
999px

Console