.loading > [class*="icon-"] {
  display: inline-block;
  -webkit-animation: rotate 2s infinite linear both;
          animation: rotate 2s infinite linear both;
  -webkit-transform-origin: 50% 50%;
      -ms-transform-origin: 50% 50%;
          transform-origin: 50% 50%;
}

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

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