.preloader-1 {
  margin: 14% auto 0;
  width: 80px;
  height: 12px;
  text-align: center;
  font-size: 20px;
}


.preloader-1 .line {
  width: 1px;
  height: 12px;
  background: #000;
  margin: 0 1px;
  display: inline-block;
  animation: opacity-1 1000ms infinite ease-in-out;
}

.preloader-2 .line {
  width: 1px;
  height: 12px;
  background: #fff;
  margin: 0 1px;
  display: inline-block;
  animation: opacity-2 1000ms infinite ease-in-out;
}

.preloader-1 .line-1, .preloader-2 .line-1 { animation-delay: 800ms; }
.preloader-1 .line-2, .preloader-2 .line-2 { animation-delay: 600ms; }
.preloader-1 .line-3, .preloader-2 .line-3 { animation-delay: 400ms; }
.preloader-1 .line-4, .preloader-2 .line-4 { animation-delay: 200ms; }
.preloader-1 .line-6, .preloader-2 .line-6 { animation-delay: 200ms; }
.preloader-1 .line-7, .preloader-2 .line-7 { animation-delay: 400ms; }
.preloader-1 .line-8, .preloader-2 .line-8 { animation-delay: 600ms; }
.preloader-1 .line-9, .preloader-2 .line-9 { animation-delay: 800ms; }

@keyframes opacity-1 { 
  0% { 
    opacity: 1;
  }
  50% { 
    opacity: 0;
  }
  100% { 
    opacity: 1;
  }  
}

@keyframes opacity-2 { 
  0% { 
    opacity: 1;
    height: 15px;
  }
  50% { 
    opacity: 0;
    height: 12px;
  }
  100% { 
    opacity: 1;
    height: 15px;
  }  
}