vendor/twbs/bootstrap/scss/_spinners.scss


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//
// Rotating border
//

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

.spinner-border {
  display: inline-block;
  width: $spinner-width;
  height: $spinner-height;
  vertical-align: text-bottom;
  border: $spinner-border-width solid currentColor;
  border-right-color: transparent;
  // stylelint-disable-next-line property-disallowed-list
  border-radius: 50%;
  animation: spinner-border .75s linear infinite;
}

.spinner-border-sm {
  width: $spinner-width-sm;
  height: $spinner-height-sm;
  border-width: $spinner-border-width-sm;
}

//
// Growing circle
//

@keyframes spinner-grow {
  0% {
    transform: scale(0);
  }
  50% {
    opacity: 1;
    transform: none;
  }
}

.spinner-grow {
  display: inline-block;
  width: $spinner-width;
  height: $spinner-height;
  vertical-align: text-bottom;
  background-color: currentColor;
  // stylelint-disable-next-line property-disallowed-list
  border-radius: 50%;
  opacity: 0;
  animation: spinner-grow .75s linear infinite;
}

.spinner-grow-sm {
  width: $spinner-width-sm;
  height: $spinner-height-sm;
}