img.progressive-image {
  transition: opacity 0.3s ease-in;
  opacity: 0.25
}
img.progressive-image.progressive-image-eager {
  opacity: 0.3
}
img.progressive-image.progressive-image-eager.progressive-image-loaded {
  opacity: 1
}
img.progressive-image.progressive-image-loaded {
  opacity: 1
}