.preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: white;
    z-index: 999999;
    display: flex;
    align-items: center;
    justify-content: center;
    
  }

  .imagenprevia{
    width: 15vh;
    --dim: 3rem;
    animation: spin988 2s linear infinite;

  }

  @keyframes spin988 {
    0% {
      transform: scale(1) rotate(0);
    }
  
    20%, 25% {
      transform: scale(1.3) rotate(90deg);
    }
  
    45%, 50% {
      transform: scale(1) rotate(180deg);
    }
  
    70%, 75% {
      transform: scale(1.3) rotate(270deg);
    }
  
    95%, 100% {
      transform: scale(1) rotate(360deg);
    }
  }