body, html {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  overflow: hidden;
  background:#000;
}

#moon {
  text-align: center;
}

.vertical-center {
  margin: 0;
  top: 50%;
  -ms-transform: translateY(50%);
  transform: translateY(50%);
}

#wolf  {
  margin-top: 30%;
  margin: auto;
}