.lazy-hidden,.entry img.lazy-hidden, img.thumbnail.lazy-hidden {
    opacity: 0;
    background-color: #ffffff;
}
figure.wp-block-image img.lazy-hidden {
	min-width: 150px;
}
.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: 1 !important;
}