.loading {
  animation: load3 3s infinite linear;
  background: url("../image/loading.png") no-repeat center;
  background-size: auto 100%;
  border-radius: 50%;
  display: inline-block;
  height: 2.7em;
  text-indent: -9999em;
  transform: translateZ(0);
  vertical-align: middle;
  width: 2.7em;
}

@keyframes load3 {
  0% {
    transform: rotate(0deg);
  }

  25% {
    transform: rotate(0deg);
  }

  50% {
    transform: rotate(180deg);
  }

  75% {
    transform: rotate(180deg);
  }

  100% {
    transform: rotate(360deg);
  }
}