body {
  min-height: 100%;
  padding: 0px;
  margin: 0px;
}

.spin-wrapper {
  position: relative;
  width: 100%;
  height: 100%;
  margin-top: -15px;
}
.spin-wrapper .spinner {
  position: absolute;
  height: 60px;
  width: 60px;
  border: 3px solid transparent;
  border-top-color: #b03769;
  top: 50%;
  left: 50%;
  margin: -30px;
  border-radius: 50%;
  animation: spin 2s linear infinite;
}
.spin-wrapper .spinner:before, .spin-wrapper .spinner:after {
  content: '';
  position: absolute;
  border: 3px solid transparent;
  border-radius: 50%;
}
.spin-wrapper .spinner:before {
  border-top-color: #3790b0;
  top: -12px;
  left: -12px;
  right: -12px;
  bottom: -12px;
  animation: spin 3s linear infinite;
}
.spin-wrapper .spinner:after {
  border-top-color: #7fb039;
  top: 6px;
  left: 6px;
  right: 6px;
  bottom: 6px;
  animation: spin 4s linear infinite;
}

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