.blur-up {
  position: relative;
  display: block;
  overflow: hidden;
}

.blur-up__placeholder,
.blur-up__img {
  display: block;
  width: 100%;
  height: auto;
}

.blur-up__placeholder {
  filter: blur(20px);
  transform: scale(1.06);
  opacity: 0.9;
}

.blur-up__img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  filter: blur(20px);
  transition:
    filter 0.5s ease,
    opacity 0.5s ease;
}

.blur-up.is-loaded .blur-up__img {
  opacity: 1;
  filter: blur(0);
}