.loading-overlay {
    position: relative;
    min-height: 100px;
}

.loading-overlay:after {
    content: '';
    display: block;
    position: absolute;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    z-index: 100;
}

.loader-img {
    position:absolute;
    top: 80px;
    left:45%;
    z-index:101;
}

.loader-img img {
    width: 60px;
    position:fixed;
    bottom: 50%;
}