*,
*::before,
*::after {
  box-sizing: border-box;
  font-family: Arial, Helvetica, sans-serif;
}

.spinner,
.spinner-2 {
  width: 300px;
  height: 300px;
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  font-size: 2rem;
  overflow: hidden;
  animation: text-color 1s ease-in-out infinite alternate;
}

@keyframes text-color {
  0% {
    color: rgba(0, 0, 0, 1);
  }
  50% {
    color: rgba(0, 0, 0, 0.5);
  }
  100% {
    color: rgba(0, 0, 0, 0.1);
  }
}

.spinner-sector,
.spinner-2::before,
.spinner-2::after {
  --duration: 1s;
  --timing: ease-in-out;

  position: absolute;
  width: 100%;
  height: 100%;
  border: 10px solid transparent;
  border-radius: 50%;
  pointer-events: none;
  mix-blend-mode: overlay;
  animation: rotate var(--duration) var(--timing) infinite;
}

@keyframes rotate {
  from {
    transform: rotate(0);
  }
  to {
    transform: rotate(360deg);
  }
}

.spinner-sector-red {
  border-top-color: lightcoral;
}

.spinner-sector-green {
  --duration: 2s;
  --timing: ease-in;

  border-left-color: lightgreen;
}

.spinner-sector-blue {
  --duration: 3s;
  --timing: ease-out;

  border-right-color: lightblue;
}

.spinner-2 {
  margin-top: 2rem;
}

.spinner-2::before,
.spinner-2::after {
  content: "";
}

.spinner-2::before {
  border-left-color: lightgreen;
}

.spinner-2::after {
  --duration: 2s;
  --timing: ease-in;

  border-top-color: lightblue;
}