.lottie {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%); /* for IE 9 */
  -webkit-transform: translate(-50%, -50%); /* for Safari */
  width: 48px;
  height: 48px;
}

img {
  aspect-ratio: attr(width) / attr(height);
}