.preloader {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      z-index: 9999;
      background-color: #fff;
    }
    .preloader .loading {
      position: absolute;
      left: 50%;
      top: 50%;
      transform: translate(-50%,-50%);
      font: 14px arial;
    }