.lazy {
  transition: opacity 0.3s ease;
}

.lazy.loading {
  opacity: 0.3;
  background: #f0f0f0;
}

.lazy-brush.loading {
  background-color: transparent;
  opacity: 0;
}

.lazy.loaded {
  opacity: 1;
}

.lazy {
  background-repeat: no-repeat;
  background-size: cover;
  background-position: center;
}