#cover-spin {
    position: fixed;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: url(https://icons8.com/preloaders/preloaders/37/Atom.gif) 50% 50% no-repeat rgb(53 53 52 / 46%);
}