.dl_mask_loader .dl_loader{
    position: fixed;
    margin: auto;
    width: 50px;
    height: 50px;
    background-image:url(../img/svg/loader.svg);
    top: 50%;
    left: 50%;
    z-index: 1001;
    background-size: cover;
}
.dl_mask_loader,
.dl_mask_notify,
.dl_mask{
    position: fixed;width: 100%;height: 100%;top: 0;left: 0;background: rgba(0,0,0,0.5);z-index: 1000;
}