.loader-act {
  transform: rotateZ(45deg);
  perspective: 1000px;
  border-radius: 50%;
  width: 48px;
  height: 48px;
  color: #fff;
}
  .loader-act:before,
  .loader-act:after {
    content: '';
    display: block;
    position: absolute;
    top: 0;
    left: 0;
    width: inherit;
    height: inherit;
    border-radius: 50%;
    transform: rotateX(70deg);
    animation: 1s spinx linear infinite;
  }
  .loader-act:after {
    color: #FF3D00;
    transform: rotateY(70deg);
    animation-delay: .4s;
  }

@keyframes spinx {
  0%,
  100% {
    box-shadow: .2em 0px 0 0px currentcolor;
  }
  12% {
    box-shadow: .2em .2em 0 0 currentcolor;
  }
  25% {
    box-shadow: 0 .2em 0 0px currentcolor;
  }
  37% {
    box-shadow: -.2em .2em 0 0 currentcolor;
  }
  50% {
    box-shadow: -.2em 0 0 0 currentcolor;
  }
  62% {
    box-shadow: -.2em -.2em 0 0 currentcolor;
  }
  75% {
    box-shadow: 0px -.2em 0 0 currentcolor;
  }
  87% {
    box-shadow: .2em -.2em 0 0 currentcolor;
  }
}