.loader {
  position: relative;
  width: 78px;
  height: 78px;
  border-radius: 50%;
  background: #fff;
  border: 8px solid #131a1d;
  overflow: hidden;
  box-sizing: border-box;
}

.loader::after {
  content: '';
  position: absolute;
  left: 0;
  top: -50%;
  width: 100%;
  height: 100%;
  background: #263238;
  z-index: 5;
  border-bottom: 8px solid #131a1d;
  box-sizing: border-box;
  animation: eyeShade 3s infinite;
}

.loader::before {
  content: '';
  position: absolute;
  left: 20px;
  bottom: 15px;
  width: 32px;
  z-index: 2;
  height: 32px;
  background: #111;
  border-radius: 50%;
  animation: eyeMove 3s infinite;
}

@keyframes eyeShade {
  0% {
    transform: translateY(0)
  }

  20% {
    transform: translateY(5px)
  }

  40% , 50% {
    transform: translateY(-5px)
  }

  60% {
    transform: translateY( -8px)
  }

  75% {
    transform: translateY( 5px)
  }

  100% {
    transform: translateY(10px)
  }
}

@keyframes eyeMove {
  0% {
    transform: translate(0 , 0)
  }

  20% {
    transform: translate(0px , 5px)
  }

  40% , 50% {
    transform: translate(0px , -5px)
  }

  60% {
    transform: translate(-10px , -5px)
  }

  75% {
    transform: translate(-20px , 5px)
  }

  100% {
    transform: translate(0 , 10px)
  }
}