yigitcolakoglu.com/assets/fontawesome/less/_animated.less

// Animated Icons
// --------------------------

.@{fa-css-prefix}-spin {
  animation: fa-spin 2s infinite linear;
}

.@{fa-css-prefix}-pulse {
  animation: fa-spin 1s infinite steps(8);
}

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