Pseudo element - Demo

dabblet.css

/* Pseudo element - Demo */

* {box-sizing: border-box}

.box {
	width: 300px;
	height: 200px;
	background: hotpink;
	text-align: center;
	color: white;
	font-family: Georgia;
	font-size: 2.5em;
	padding: 	30px;
	margin: 70px auto;
	position: relative;
}

.box:before {
	content: "";
	display: block;
	width: 280px;
	height: 150px;
	background: rgb(0,0,255);
	position: absolute;
	left: 10px;
	top: -20px;
	z-index: -1;
	
	animation: before 1s;
}

.box:after {
	content: "";
	display: block;
	width: 260px;
	height: 150px;
	background: rgba(0,255,255,0.4);
	position: absolute;
	left: 20px;
	top: -35px;
	z-index: -2;
	
	animation: after 1s;
}

@keyframes after {
	from {
		top: -35px;
		width: 260px;
	}
	
	to {
		top: -50px;
		width: 240px;
	}
}

@keyframes before {
	from {
		top: -20px;
		width: 280px;
	}
	
	to {
		top: -35px;
		width: 260px;
	}
}

dabblet.html

<div class="box">Multiple Backgrounds</div>

dabblet.js

// alert('Hello world!');

settings.json

{"view":"split","fontsize":"100","seethrough":"","prefixfree":"1","page":"css"}