@media (prefers-color-scheme: light) {
  :root:not(:has(main)) {
    body {
      background-color: #fff;
    }
  }
  .loader::after, .loader::before {
    border: 2px solid #000;
  }
}

@media (prefers-color-scheme: dark) {
  :root:not(:has(main)) {
    body {
      background-color: #212529;
    }
  }
  .loader::after, .loader::before {
    border: 2px solid #fff;
  }
}

.loader {
  width: 69px;
  height: 69px;
  display: inline-block;
  position: relative;
}

.loader::after,
.loader::before {
  content: '';
  box-sizing: border-box;
  width: 69px;
  height: 69px;
  border-radius: 50%;
  position: absolute;
  left: 0;
  top: 0;
  animation: animloader 2s linear infinite;
}

.loader::after {
  opacity: 0;
  animation-delay: 1s;
}

@keyframes animloader {
  0% {
    transform: scale(0);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 0;
  }
}