example-element {
  margin: 6px;
  display: none;
  border-radius: 50%;
  width: 32px;
  height: 32px;
  border: 8px solid #A6CEE3;
  border-left: 8px solid #1F78B4;
  animation: example-element-spin 1.5s infinite linear;
}

example-element[active] {
  display: inline-block;
}

@keyframes example-element-spin {
  0% {
    transform:
    rotate(0deg);
  }
  100% {
    transform:
    rotate(360deg);
  }
}