:root {
    --theme: #2688db;
}
img[data-src]{opacity: 0;}
img[done]{opacity: 1;transition: opacity .01s;}
.visually-hidden{position: absolute;width: 1px;height: 1px;padding: 0;margin: -1px;overflow: hidden;clip: rect(0, 0, 0, 0);border: 0;}