*{
  padding: 0;
  margin: 0;
  text-align: center;
}
body {
  overflow: hidden;
  background-color: #000000;
}

#background {
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  left: 0;
  margin: auto;
}

#layer{
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  left: 0;
  margin: auto;
}