#loading{
    position: absolute;
    top:0;
    left:0;
    width: 100%;
    height: 100%;
    background: lightgrey;
    opacity: 0.9;
    z-index: 999;
    color: black;
}
#loading>label{
    position: absolute;
    top: 50%;
    left: 50%;
    font-size: 3em;
    z-index: 1000;
}