.cw-lazy-load img {
    background: #ddd;
    /*width: 100px;*/
    height: 100px;
    width:100%;
    padding-top: 62%;
}


.cw-lazy-load img, .cw-lazy-loaded img {
    -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;
}

.cw-lazy-loaded img { opacity: 1; }



.cw-lazy-load img.lazy-dummy-sq { padding-top: 100%; }
.cw-lazy-load img.lazy-dummy-phi-wide { padding-top: calc(494/800 * 100%); }