.spin {
    width: 1px;
    height: 1px;
    float: left;
}       
.spin-windowlock {
    position: absolute;
    top: 0px;
    left: 0px;
    color: black;
    float: left;
    z-index: 99999;
    background: rgba(245, 245, 245, 0.5);
}