.bi-spin, .fa-spin {
  display: inline-block;
  -webkit-animation: bi-spin 1s linear infinite;
          animation: bi-spin 1s linear infinite;
}
@-webkit-keyframes bi-spin {
  100% { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}
@keyframes bi-spin {
  100% { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}