.fade(@className,@keyframes) {
  .rab-fade-@{className} {
    -webkit-animation: @keyframes 0.3s ease-in-out;
            animation: @keyframes 0.3s ease-in-out;
  }
}

.fade(in,rabFadeIn);
.fade(out,rabFadeOut);

@-webkit-keyframes rabFadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

@keyframes rabFadeIn {
  0% {
    opacity: 0;
  }
  100% {
    opacity: 1;
  }
}

@-webkit-keyframes rabFadeOut {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}

@keyframes rabFadeOut {
  0% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}