.up-loader{
    text-align: center;
    position: fixed;
    left: 0px;
    top: 0px;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: url(//shipcdn.com/Assets/ajax-loader.gif) 50% 50% no-repeat rgba(252, 252, 252, 0.5);
}