.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{
	width: 25%;
	padding: 1%;
	border-radius: 15px;
	box-shadow: 0 0 5px #CCC;
	background: #FFF;
	position: relative;
	margin: 7% auto;
	transition: all 5s ease-in-out;
	z-index: 100;
}

#cerrar{
	position: absolute;
	top: 20px;
	right: 30px;
	font-size: 30px;
	font-weight: bold;
	text-decoration: none;
	color: #F00;
	transition: all 200ms;
}

.button {
  background-color: #4CAF50;
  border: none;
  color: white;
  padding: 15px 32px;
  text-align: center;
  text-decoration: none;
  display: inline-block;
  font-size: 16px;
  margin: 4px 2px;
  cursor: pointer;
}
@media only screen and (max-width: 1200px) {
  #popupBody{
    width: 80%;
    padding: 1%;
    border-radius: 15px;
    box-shadow: 0 0 5px #CCC;
    background: #FFF;
    position: relative;
    margin: 15% auto;
    transition: all 5s ease-in-out;
    z-index: 100;
  }
}