div#preloader {
    position: fixed;
    left: 0;
    top: 0;
    z-index: 99999;
    width: 100%;
    height: 100%;
    overflow: visible;
    background: #fff url('/frontend/img/logo.png');
    background-position: center;
    background-size: 25% auto;
    background-repeat: no-repeat;
  }