.jm-loadingpage {
    position: fixed;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    align-items: center;
    /*background: rgba(0, 0, 0, 0.52);*/
    z-index: 999999999999999;
    background: url(../images/loadingpage.gif) center no-repeat rgba(0, 0, 0, 0.17);
    
}