#progress_overlay{   
    position: fixed;
    top: 0;
    z-index: 100;
    width: 100%;
    height:100%;
    display: none;
    background: rgba(0,0,0,0.6);
}
.cv_prg {
    height: 100%;
    display: flex;
    justify-content: center;
    align-items: center;  
}