<div class="halloween">
	<div class="head">
		<div class="skull">
			<div class="eyes">
				<div class="eye eye-left"></div>
				<div class="eye eye-right"></div>
			</div>
		</div>
	</div>
	<div class="body"></div>
	<div class="legs"></div>
</div>
body{
	margin:0;
	color:#444;
	background:#ffff33;
	font:300 18px/18px Roboto, sans-serif;
}
*,:after,:before{box-sizing:border-box}
.pull-left{float:left}
.pull-right{float:right}
.clearfix:after,.clearfix:before{content:'';display:table}
.clearfix:after{clear:both;display:block}

.halloween .head .skull:before,
.halloween .head .skull:after,
.halloween .eyes .eye:before,
.halloween .body:before,
.halloween .body:after,
.halloween .legs:before{
	content:'';
	position:absolute;
}
.halloween{
	top:50%;
	left:50%;
	width:30px;
	height:44px;
	position:fixed;
	margin-top:-22px;
	margin-left:-15px;
	animation:move 3s infinite;
}
.halloween .head{
	z-index:1;
	width:25px;
	height:25px;
	background:#444;
	border-radius:50%;
	position:relative;
}
.halloween .head .skull{
	left:2px;
	bottom:2px;
	width:16px;
	height:16px;
	color:#f9f9f9;
	border-radius:50%;
	background:#f9f9f9;
	position:absolute;
	animation:skull 3s infinite;
}
.halloween .head .skull:before{
	top:9px;
	width:0;
	left:50%;
	height:0;
	z-index:1;
	margin-left:-2px;
	border:2px solid transparent;
	border-bottom:2px solid #444;
}
.halloween .head .skull:after{
	top:14px;
	left:50%;
	width:1px;
	height:4px;
	margin-left:-1px;
	background:#f9f9f9;
	box-shadow: 2px 0,-2px 0,4px 0,-4px 0,
				-3px -2px,-1px -2px,1px -2px,3px -2px
}
.halloween .eyes{
	width:inherit;
	height:inherit;
	overflow:hidden;
	border-radius:50%;
	position:relative;
}
.halloween .eyes .eye{
	top:5px;
	width:5px;
	height:5px;
	position:absolute;
	border-radius:50%;
	background:#f8cd22;
	border:1px solid #444;
	border-right:2px solid #444;
}
.halloween .eyes .eye:before{
	top:-1px;
	left:-1px;
	width:5px;
	height:3px;
	background:#f9f9f9;
	border-radius:5px 5px 0 0;
	animation:eyes 3s infinite;
}
.halloween .eyes .eye.eye-left{
	left:1px;
}
.halloween .eyes .eye.eye-right{
	right:1px;
}
.halloween .body{
	top:-3px;
	width:24px;
	height:17px;
	background:#444;
	position:relative;
	border-radius:10px 10px 2px 2px;
}
.halloween .body:before,
.halloween .body:after{
	top:3px;
	width:4px;
	height:12px;
	background:#444;
}
.halloween .body:before{
	left:-1px;
	border-radius:100% 0 0 2px;
	transform:rotate(10deg);
	animation:hand-left 3s infinite;
}
.halloween .body:after{
	right:-1px;
	border-radius:0 100% 2px 0;
	transform:rotate(-10deg);
	animation:hand-right 3s infinite;
}
.halloween .legs{
	top:-3px;
	left:50%;
	width:21px;
	height:10px;
	overflow:hidden;
	margin-left:-13px;
	position:relative;
	border-bottom:1px solid rgba(0,0,0,.2);
}
.halloween .legs:before{
	top:0;
	left:-7px;
	width:60px;
	height:10px;
	background-image:linear-gradient(-495deg, #444 4px,transparent 0), linear-gradient(-45deg, transparent 4px, #444 0);
	background-size:4px 8px;
	background-repeat:repeat-x;
	animation:legs 3s infinite;
}
@keyframes move{
	0%{
		transform:translateX(0)
	}
	50%{
		transform:translateX(15px)
	}
	100%{
		transform:translateX(0)
	}
}
@keyframes skull{
	0%{
		transform:translate(0,0)
	}
	25%{
		transform:translate(2px,1px)
	}
	75%{
		transform:translate(3px,-1px)
	}
	100%{
		transform:translate(0,0)
	}
}
@keyframes eyes{
	0%{
		top:-5px;
		border-radius:50%;
	}
	50%{
		top:-1px;
		border-radius:5px 5px 0 0;
	}
	100%{
		top:-5px;
		border-radius:50%;
	}
}
@keyframes legs{
	0%{
		left:-7px;
	}
	50%{
		left:-25px;
	}
	100%{
		left:-7px;
	}
}
@keyframes hand-left{
	0%{
		left:1px;
	}
	50%{
		left:-2px;
	}
	100%{
		left:1px;
	}
}
@keyframes hand-right{
	0%{
		right:1px;
	}
	50%{
		right:-2px;
	}
	100%{
		right:1px;
	}
}

External CSS

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External JavaScript

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