@keyframes spinner-border {
  to {
    transform: rotate(360deg);
  }
}

.spinner-border {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  vertical-align: text-bottom;
  border: .25em solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  -webkit-animation: spinner-border 1.25s linear infinite;
  animation: spinner-border 1.25s linear infinite;
}