.loading-site {
    position: fixed;
    z-index: 99;
    width: 100%;
    height: 100%;
    background-color: white;
    color: black;
    display: none;
}

    .loading-site.active {
        display: block;
        text-align: center;
    }

        .loading-site.active .loading-img {
            display: inline-block;
            margin: auto;
            position: absolute;
            top: 0;
            left: 0;
            bottom: 0;
            right: 0;
        }