body {
	background-color:#000;
}

.centered img{
	margin: auto;
	position: absolute;
	top: 0;
	left: 0;
	bottom: 0;
	right: 0;
	width:60%;
}

.pulse {
  animation: pulse 1.5s infinite;
  animation-direction: alternate;
  -webkit-animation-name: pulse;
  animation-name: pulse;
}

@-webkit-keyframes pulse {
  0% {
    -webkit-transform: scale(1);
  }
  50% {
    -webkit-transform: scale(1.012);
  }
  100% {
    -webkit-transform: scale(1);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.012);
  }
  100% {
    transform: scale(1);
  }
}