.loader {
  position: relative;
  overflow: hidden;
  box-shadow: -5px -5px -5px rgba(255, 255, 255, 0.1),
                10px 10px 10px rgba(0, 0, 0, 0.4),
                inset -5px -5px -5px rgba(255, 255, 255, 0.2),
                inset 10px 10px 10px rgba(0, 0, 0, 0.4);
  height: 100px;
  width: 100px;
  border-radius: 50%;
}

.loader:before {
  position: absolute;
  content: '';
  z-index: 10;
  opacity: 10;
  top: 25px;
  left: 25px;
  right: 25px;
  bottom: 25px;
  background-color: #010113;
  border-radius: 50%;
  box-shadow: -5px -5px -5px rgba(255, 255, 255, 0.1),
    10px 10px 10px rgba(0, 0, 0, 0.4),
    inset -5px -5px -5px rgba(255, 255, 255, 0.2),
    inset 10px 10px 10px rgba(0, 0, 0, 0.4);
}

.loader span {
  position: absolute;
  height: 100%;
  width: 100%;
  filter: blur(20px);
  border-radius: 50%;
  background: linear-gradient(#0e11d4, #0b8f84, #d81587);
  animation: loader_41 0.6s linear infinite;
}

@keyframes loader_41 {
  0% {
    transform: rotate(0deg);
  }

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