.preloader {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: url('../img/Logos/waiting.gif');
    background-repeat: no-repeat;
    background-color: #FFF;
    background-position: center;
    background-size: 80px auto;
    z-index: 100000 !important;
}
.waiting {
    background-image: url('../img/Logos/waiting.gif');
}