.div_loading{
    position: fixed;
    top: 0px;
    left:0px;
    bottom: 0px;
    right: 0px;
    z-index: 2000;
    font-size: 24px;
    font-weight: bold;
    text-align: center;
    background-color: #fff;
    padding-top: 10px;
    opacity: 0.5;
}