img[loading="lazy"] {
    background-color: #f1eef8;
    filter: blur(12px);
    opacity: .48;
    transition: filter .45s ease, opacity .35s ease;
}

img[loading="lazy"].is-image-loaded {
    filter: blur(0);
    opacity: 1;
}

@media (prefers-reduced-motion: reduce) {
    img[loading="lazy"] {
        transition: none;
    }
}