.global-spinner-div {
    height:100vh;
    width:100vw;
    background-color:#fff;
    z-index:100000000;
    position:absolute;
    display:table-cell;
}
    .global-spinner-div img {
        position:absolute;
        left:50%;
        top:50%;
        transform:translateX(-50%) translateY(-50%);
    }