.loading {
  pointer-events: none;
}

.loading span::after {
  content: "...";
  animation: loading 1s infinite;
}

@keyframes loading {
  0% {
    content: "";
  }
  25% {
    content: ".";
  }
  50% {
    content: "..";
  }
  75% {
    content: "...";
  }
  100% {
    content: "";
  }
}