.loader {
  width: 100px;
  height: 100px;
  box-shadow: 0px 20px 40px #ff4646, 0px -20px 40px #8949ff, 20px 0px 40px#ff07fb, -20px 0px 40px #ff07fb;
  border-radius: 10em;
  position: relative;
  animation: rotate 1s linear infinite;
}

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

  to {
    transform: rotate(360deg);
  }
}