html, body{
  position: absolute;
  left: 0;
  top: 0;
  width: 100vw;
  height: 100vh;
  margin: 0;
  padding: 0;
}

#wrapper{
  background-image: url("../images/start-info.jpg");
  height: 100vh;
  background-repeat: no-repeat;
  background-size: contain;
  background-position: center;
}