#loading {
    display: table;
    width: 100%;
    height: 100%;
    position: fixed;
    top: 0;
    left: 0;
    background-color: #fff;
    opacity: 0.8;
}

#loading .loadingMsg {
    display: table-cell;
    text-align: center;
    vertical-align: middle;
    padding-top: 140px;
    background: url("../../images/system/loading.gif") center center no-repeat;
}