* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

section {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background: #001d30;
}

.loader {
  position: absolute;
  width: 150px;
  height: 150px;
  background: linear-gradient(
    0deg,
    rgba(0, 29, 48, 1) 40%,
    rgba(81, 238, 238, 1) 100%
  );
  border-radius: 50%;
  animation: rotate 2s linear infinite;
}

.loader:before {
  content: "";
  position: absolute;
  inset: 20px 20px 0 0;
  background: #001d30;
  border-radius: 50%;
}

.loader:after {
  content: "";
  position: absolute;
  width: 40px;
  height: 40px;
  background: #51eeee;
  border-radius: 50%;
  top: 50px;
  right: -8px;
  box-shadow: 0 0 5px #51eeee, 0 0 25px #51eeee, 0 0 50px #51eeee,
    0 0 75px #51eeee;
}

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