.overlay-block {
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
}

.loader {
    width: 400px;
    height: auto;
    margin: 150px auto;
    z-index: 99999;
}