Sencilla animación CSS

dabblet.css

/**
 * Sencilla animación CSS 
 */
body {
	background: #EFEFEF;
}

div.recuadro {
  	background: #fff;
	margin: 0 300px;
	width: 100px;
	padding: 25px;
	text-align: center;
	-webkit-border-radius: 5px;
	-moz-border-radius: 5px;
	border-radius: 5px;
	-webkit-box-shadow: rgba(0,0,0,0.2) 0px 1px 3px;
	-moz-box-shadow: rgba(0,0,0,0.2) 0px 1px 3px;
	box-shadow: rgba(0,0,0,0.2) 0px 1px 3px;  
}
@keyframes "agrandar" {
	0%, 20%, 40%, 60%, 80%, 100% {
		-webkit-transform: scale(1.0);   	   	
		-ms-transform: scale(1.0);
		transform: scale(1.0);
	}
	10%, 30%, 50%, 70%, 90% {
		-webkit-transform: scale(1.5);      
		-ms-transform: scale(1.5);
		transform: scale(1.5);
	}
}

@-webkit-keyframes "agrandar" {
	0%, 20%, 40%, 60%, 80%, 100% {
		-webkit-transform: scale(1.0);
		transform: scale(1.0);
	}
	10%, 30%, 50%, 70%, 90% {
		-webkit-transform: scale(1.5);
		transform: scale(1.5);
	}
}

/* Elemento al que asociamos la animación */
.recuadro:hover {
	-webkit-animation-name: 'agrandar';	
	animation-name: 'agrandar';
	animation-duration: 3s;
	-webkit-animation-duration: 3s;	

	-webkit-animation-iteration-count: 2;
	animation-iteration-count: 2;

	-webkit-animation-timing-function: ease;
	animation-timing-function: ease;
	
	-webkit-transform: scale(1.5);      
   	-ms-transform: scale(1.5);
   	transform: scale(1.5);
}

dabblet.html

<div class="recuadro">Pasa el cursor por encima</div>

dabblet.js

// alert('Hello world!');

settings.json

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