.preloader {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: #fefefe;
    z-index: 99999;
    height: 100%;
    width: 100%;
    overflow: hidden !important;
}

.loaded {
 
    position: absolute;
    left: 50%;
    top: 50%;
    background-image: url(../img/loading.gif);
    background-repeat: no-repeat;
    background-position: center;
    -moz-background-size: cover;
    background-size: cover;
    margin: -1vw 0 0 -1vw;
}