#loading_banner {
    width: 100%;
    height: 100%;
    z-index: 1000;
}

#loading_banner #bg {
    width: 100%;
    height: 100%;
    background-color: gray;
    opacity: 50%;
    position: absolute;
}

#loading_banner h1 {
    z-index: 12321;
    opacity: 100%;
    position: absolute;
    top: 50%;
    left: 50%;
}