.loading-overlay {
    position: fixed;
    z-index: 1000000000000;
    top: 0;
    left: 0;
    height: 100%;
    width: 100%;
    background: rgba( 205, 205, 205, 0.4 );
    padding: 0;
}
.loading {
    position: absolute;
    top:0px;
    right:0px;
    width:100%;
    height:100%;
    background-image:url('../images/material/loader.gif');
    background-size: 60px;
    background-repeat:no-repeat;
    background-position:center;
    filter: alpha(opacity=40);
}