.lazy-hidden,.entry img.lazy-hidden, img.thumbnail.lazy-hidden {
 background-color: #ffffff;
 background-image: url('loading.gif');
 background-repeat: no-repeat;
 background-position: 50% 50%;
}
figure.wp-block-image img.lazy-hidden {
 min-width: 150px;
}
picture source[type="image/webp"] {
 display: block;
}