@-webkit-keyframes spinner-border {
    to {
      -webkit-transform: rotate(360deg);
      transform: rotate(360deg);
    }
  }
  
  @keyframes spinner-border {
    to {
      -webkit-transform: rotate(360deg);
      transform: rotate(360deg);
    }
  }
  
  .spinner-border {
    display: inline-block;
    width: 2rem;
    height: 2rem;
    vertical-align: text-bottom;
    border: 0.25em solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    -webkit-animation: .75s linear infinite spinner-border;
    animation: .75s linear infinite spinner-border;
  }
  
  .spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.2em;
  }

  @media (prefers-reduced-motion: reduce) {
    .spinner-border {
      -webkit-animation-duration: 1.5s;
      animation-duration: 1.5s;
    }
  }