.loader {
  width: 100%;
  height: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.circle {
  width: 200px;
  height: 200px;
  border-radius: 360px 400px;
  border: 12px solid;
  position: absolute;
}

.c1 {
  animation: rota 2.2s linear infinite;
  border-color: orange;
}

.c2 {
  animation: rota 3s linear infinite;
  border-color: red;
}

.c3 {
  animation: rota 2s linear infinite;
  border-color: #fff;
  opacity: 0.5;
}
.c4 {
  animation: rota 1s linear infinite;
  border-color: white;
  opacity: 0.8;
}
@keyframes rota {
  100% {
    transform: rotate(360deg);
  }
}