#preloader {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: 100%;
    height: 100%;
    z-index: 999999999;
    background: white;
}

#preloader img {
    position: absolute;
    top: 50%;
    left: 50%;
    margin-top: -32px;
    margin-left: -32px;
}

html, body {
    overflow: hidden;
}