.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;
}