body {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: #333;
  margin: 0;
}

.loader {
  display: flex;
  position: relative;
  width: 80px;
  height: 80px;
}

.loader div {
  position: absolute;
  width: 64px;
  height: 64px;
  border: 8px solid transparent;
  border-top-color: #ff3d00;
  border-radius: 50%;
  animation: spin 1.2s linear infinite;
}

.loader div:nth-child(2) {
  border-top-color: #ffea00;
  animation-delay: -0.4s;
}

.loader div:nth-child(3) {
  border-top-color: #00c853;
  animation-delay: -0.8s;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}