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

section {
  display: flex;

  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: rgb(94, 28, 4);
  animation: animateBg 10s linear infinite;
}

@keyframes animateBg {
  from {
    filter: hue-rotate(0deg);
  }
  to {
    filter: hue-rotate(360deg);
  }
}

section .loader {
  position: relative;
  width: 120px;
  height: 120px;
}

section .loader span {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: rotate(calc(18deg * var(--i)));
}

section .loader span::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 15px;
  height: 15px;
  border-radius: 50%;
  background: orange;
  box-shadow: 0 0 10px orange, 0 0 20px orange, 0 0 40px orange, 0 0 60px orange,
    0 0 80px orange, 0 0 100px orange;
  animation: animate 2s linear infinite;
  animation-delay: calc(0.1s * var(--i));
}

@keyframes animate {
  from {
    transform: scale(1);
  }
  to {
    transform: scale(0);
  }
}