.overlay-effect {
    position: absolute;
    top:        0;
    left:       0;
    height:     100%;
    width:      100%;
    z-index:    2;
    opacity:    0.5;
    background: #4e7996 
                url('/images/Spinner-1s-69px.gif')
                50% 50% 
                no-repeat;
                
}