.loader {
    position: fixed;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: url('http://www.atec-energy.com/bolt.gif') 50% 50% no-repeat rgb(255,255,255);
    opacity: .9;
}

/*

.loader {
    position: fixed;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: url('http://www.atec-energy.com/bolt.gif') 50% 50% no-repeat rgb(236,240,241);
    opacity: .9;
}
*/