html {
    background: #FFFFFF;
}

logo {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 75%;
  height: 75%;
  max-width: 512px;
  max-height: 512px;
  transform: translate(-50%, -50%);
  background: url(/assets//logo.png) no-repeat center;
  background-size: 100%;
}