spinner.css

.spinner {
  position: absolute;
  top: 50%;
  left: 50%;
  translate: -50% -50%;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  border: 7px solid #c9c9c9;
  animation: spinner-bulqg1 0.8s infinite linear alternate,
    spinner-oaa3wk 1.6s infinite linear;
    z-index: 9999;
}

@keyframes spinner-bulqg1 {
  0% {
    clip-path: polygon(50% 50%, 0 0, 50% 0%, 50% 0%, 50% 0%, 50% 0%, 50% 0%);
  }

  12.5% {
    clip-path: polygon(50% 50%, 0 0, 50% 0%, 100% 0%, 100% 0%, 100% 0%, 100% 0%);
  }

  25% {
    clip-path: polygon(50% 50%, 0 0, 50% 0%, 100% 0%, 100% 100%, 100% 100%, 100% 100%);
  }

  50% {
    clip-path: polygon(50% 50%, 0 0, 50% 0%, 100% 0%, 100% 100%, 50% 100%, 0% 100%);
  }

  62.5% {
    clip-path: polygon(50% 50%, 100% 0, 100% 0%, 100% 0%, 100% 100%, 50% 100%, 0% 100%);
  }

  75% {
    clip-path: polygon(50% 50%, 100% 100%, 100% 100%, 100% 100%, 100% 100%, 50% 100%, 0% 100%);
  }

  100% {
    clip-path: polygon(50% 50%, 50% 100%, 50% 100%, 50% 100%, 50% 100%, 50% 100%, 0% 100%);
  }
}

@keyframes spinner-oaa3wk {
  0% {
    transform: scaleY(1) rotate(0deg);
  }

  49.99% {
    transform: scaleY(1) rotate(135deg);
  }

  50% {
    transform: scaleY(-1) rotate(0deg);
  }

  100% {
    transform: scaleY(-1) rotate(-135deg);
  }
}