#loader-bg {
    display: none;
    position: fixed;
    width: 100%;
    height: 100%;
    top: 0px;
    left: 0px;
    background: #d3d3d3;
    opacity: 0.9;
    z-index: 998;
}
#loader {
    display: none;
    position: fixed;
    top: 50%;
    left: 50%;
    width: 200px;
    height: 200px;
    margin-top: -100px;
    margin-left: -100px;
    text-align: center;
    color: #fff;
    z-index: 999;
}