.bg {
  padding: 20px;
  border-radius: 10px;
  background-color: var(--base-color);
  --base-color: #212121;
 /*use your base color*/
}

.loader {
  width: 60px;
  height: 40px;
  position: relative;
  display: inline-block;
  background-color: var(--base-color);
}

.loader::before {
  content: '';
  left: 0;
  top: 0;
  position: absolute;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: #FFF;
  background-image: radial-gradient(circle 8px at 18px 18px, var(--base-color) 100%, transparent 0), radial-gradient(circle 4px at 18px 0px, var(--base-color) 100%, transparent 0), radial-gradient(circle 4px at 0px 18px, var(--base-color) 100%, transparent 0), radial-gradient(circle 4px at 36px 18px, var(--base-color) 100%, transparent 0), radial-gradient(circle 4px at 18px 36px, var(--base-color) 100%, transparent 0), radial-gradient(circle 4px at 30px 5px, var(--base-color) 100%, transparent 0), radial-gradient(circle 4px at 30px 5px, var(--base-color) 100%, transparent 0), radial-gradient(circle 4px at 30px 30px, var(--base-color) 100%, transparent 0), radial-gradient(circle 4px at 5px 30px, var(--base-color) 100%, transparent 0), radial-gradient(circle 4px at 5px 5px, var(--base-color) 100%, transparent 0);
  background-repeat: no-repeat;
  box-sizing: border-box;
  animation: rotationBack 3s linear infinite;
}

.loader::after {
  content: '';
  left: 35px;
  top: 15px;
  position: absolute;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background-color: #FFF;
  background-image: radial-gradient(circle 5px at 12px 12px, var(--base-color) 100%, transparent 0), radial-gradient(circle 2.5px at 12px 0px, var(--base-color) 100%, transparent 0), radial-gradient(circle 2.5px at 0px 12px, var(--base-color) 100%, transparent 0), radial-gradient(circle 2.5px at 24px 12px, var(--base-color) 100%, transparent 0), radial-gradient(circle 2.5px at 12px 24px, var(--base-color) 100%, transparent 0), radial-gradient(circle 2.5px at 20px 3px, var(--base-color) 100%, transparent 0), radial-gradient(circle 2.5px at 20px 3px, var(--base-color) 100%, transparent 0), radial-gradient(circle 2.5px at 20px 20px, var(--base-color) 100%, transparent 0), radial-gradient(circle 2.5px at 3px 20px, var(--base-color) 100%, transparent 0), radial-gradient(circle 2.5px at 3px 3px, var(--base-color) 100%, transparent 0);
  background-repeat: no-repeat;
  box-sizing: border-box;
  animation: rotationBack 4s linear infinite reverse;
}

@keyframes rotationBack {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(-360deg);
  }
}