Splitter CSS file

.image>img {
  aspect-ratio: 1/1.41;
}

#spinner {
  display: none;
}

.spinner {
  width: 48px;
  height: 48px;
  border: 5px solid gray;
  border-bottom-color: transparent;
  border-radius: 50%;
  display: inline-block;
  box-sizing: border-box;
  animation: rotation 1s linear infinite;
}

@keyframes rotation {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}