html, body {
  height: 100%;
}

.img-group {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 99%;
  height: 99%;
}
.img-group .img-start, .img-group .img-end {
  display: flex;
  justify-content: center;
  height: 100%;
}
@media (orientation: portrait) {
  .img-group .img-start, .img-group .img-end {
    flex-direction: column;
  }
  .img-group .img-start #img_1, .img-group .img-end #img_1 {
    height: 53%;
  }
  .img-group .img-start #img_2, .img-group .img-end #img_2 {
    height: 42%;
  }
  .img-group .img-start #img_3, .img-group .img-end #img_3 {
    height: 45%;
  }
  .img-group .img-start #img_4, .img-group .img-end #img_4 {
    height: 45%;
  }
}

.img-end {
  opacity: 0;
}

/*# sourceMappingURL=stile.css.map */