.pointers00 {
  width: 0;
  height: 0;
  border-left: 50px solid transparent;
  border-right: 50px solid transparent;
  
  animation: pulse 1250ms infinite;

}

@keyframes pulse {
  0% {
    opacity: 20%;
    margin-top: -10px;
    border-top: 100px solid rgb(26, 26, 26);
  
  }
  50% {
      opacity: 80%;
      margin-top: 10px;
      border-top: 100px solid rgb(26, 26, 26);
    
  }
  100% {
      opacity: 20%;
      margin-top: -10px;
      border-top: 100px solid rgb(26, 26, 26);
    
  }
}