html, body {
  height: 100%;
  width: 100%;
  margin: 0;
  overflow: hidden;
}

body > img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: left bottom;
}

@media only screen and (max-width: 768px) {
  body > img {
    width: 100%;
    height: 70%;
    object-fit: cover;
    object-position: left bottom;
  }
}

@media only screen and (max-width: 600px) {
  body > img {
    width: 100%;
    height: 50%;
    object-fit: cover;
    object-position: left bottom;
  }
}