.display-none{
    display:none;
}
#loader {
    position: fixed;
    z-index: 1000000;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: url('../images/loading.gif') no-repeat scroll center 0 transparent;
    background: rgba( 255, 255, 255, .8 ) url('../images/loading.gif') 50% 50% no-repeat;
}