.lazy-load, .lazy-loaded {
  -webkit-transition: opacity 0.3s;
  -moz-transition: opacity 0.3s;
  -ms-transition: opacity 0.3s;
  -o-transition: opacity 0.3s;
  transition: opacity 0.3s;
  opacity: 0;
}

.lazy-loaded { opacity: 1; }