.loader {
    position : fixed;
    z-index: 9999;
    background : url(/images/loading.gif) no-repeat center center fixed;
    top : 0px;
    left : 0px;
    height : 100%;
    width : 100%;
    background-color: #353535;
    text-align: center;
    color: aliceblue;
    padding-top: 40em;
}