/* PART 1 - Before Lazy Load */
img[data-lazyloaded] {
    opacity: 0;
}

/* PART 2 - Upon Lazy Load */
img.litespeed-loaded {
    -webkit-transition: opacity .5s linear 0.2s;
    -moz-transition: opacity .5s linear 0.2s;
    transition: opacity .5s linear 0.2s;
    opacity: 1;
}