#loading {
    position: fixed;
    display: block;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    text-align: center;
    opacity: 0.7;
    background-color: #333333;
    z-index: 400;
}

#loading-image {
    position: absolute;
    position: fixed;
    margin: auto;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 400;
}