.overlay { 
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  right: 0;
  background: rgba(0, 0, 0, 0.7);
  transition: opacity 500ms;
  visibility: visible;
  opacity: 1;
}

.overlay:target {
  visibility: hidden;
  opacity: 0;
}

#popupBody {
	z-index: 50;
	width: 46%;
	padding: 2%;
	border-radius: 15px;
	box-shadow: 0 0 5px #CCC;
	background: #FFF;
	position: relative;
	margin: 20% auto;
	transition: all 5s ease-in-out;
}

#cerrar {
	position: absolute;
	top: 20px;
	right: 30px;
	font-size: 30px;
	font-weight: bold;
	text-decoration: none;
	color: #F00;
	transition: all 100ms;
}