#progressIndicator {
    background-color: rgb(0,0,0);
    background-color: rgba(0,0,0,0.4);
    width: 100%;
    height: 100%;
    z-index: 10101;
    top: 0;
    left: 0;
    position: fixed;
    content: "";
    align-content: center;
}

#progressIndicator_item {
    position: fixed;
    top:50%;
    left: 50%;
    transform: translate(-50%, -50%);
}