.fadeIn {
    animation-name: fadeInAnime;
    animation-duration:1s;
    animation-fill-mode:forwards;
    opacity: 0;
    animation-delay: 0.4s;
    -webkit-backface-visibility:hidden;
    backface-visibility:hidden;
    overflow: hidden;
    }

.fadeIn:nth-child(2n){
    animation-delay: 1.1s;
}

.fadeIn:nth-child(3n){
  animation-delay: 1.2s;
}

    
    @keyframes fadeInAnime{
      from {
        opacity: 0;
      }
    
      to {
        opacity: 1;
      }
    }