#loading {
    display: none;
    position: fixed;
    z-index: 9999;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: rgba(224, 220, 220, 0.8);
}

#loading img {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}