body {
  margin: 0;
  overflow-x: auto;
  overflow-y: hidden;
  background: black;
}

.scroll-container {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
}

img {
  display: block;
  width: auto;
  height: auto;
  opacity: 0;
  transition: opacity 0.3s ease;
}

img.loaded {
  opacity: 1;
}