.preloader {
    position: fixed;
    left: 0;
    top: 0;
    right: 0;
    bottom: 0;
    background: #4d4d4d;
    z-index: 1001;
  }
  
  .preloader__row {
    position: relative;
    top: 50%;
    left: 50%;
    width: 70px;
    height: 70px;
    margin-top: -35px;
    margin-left: -35px;
    text-align: center;
    animation: preloader-rotate 2s infinite linear;
  }
  .loaded_hiding .preloader {
    transition: 0.3s opacity;
    opacity: 0;
  }
  
  .loaded .preloader {
    display: none;
  }