.preloader .preload-container:after {
    animation: shine 0.9s ease-in-out  infinite;
    animation-fill-mode: forwards;  
    content: "";
    position: absolute;
    top: -110%;
    left: -210%;
    width: 200%;
    height: 200%;
    opacity: 0;
    transform: rotate(30deg);
    
    background: rgba(204,204,204, 0.13);
    background: linear-gradient(
      to right, 
      rgba(204,204,204, 0.13) 0%,
      rgba(204,204,204, 0.13) 77%,
      rgba(204,204,204, 0.5) 92%,
      rgba(204,204,204, 0.0) 100%
    );
  }
  @keyframes shine {
    0% {
      opacity: 50%;
      left: -210%;
    }
    50%{
      opacity: 99%;
    }
    100% {
      opacity: 50%;
      left: 100%;
    }
  }