Quick CSS snipper for displaying spinner

loader-css

#loader {
    position: absolute;
    background-repeat: no-repeat;
    background-position: 50% 50%;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(255, 255, 255, 1);
    z-index: 99;
    background-image: url('/static/loader.gif');
}