.wrapper-with-overlay {
    position: relative;
}

.wrapper-with-overlay .loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.85);
    z-index: 999;
    text-align: center;
    align-items: center;
    justify-content: center;

    /* flex centering */
    display: -webkit-box;
    display: -ms-flexbox;
    display: flex;
    -webkit-box-align: center;
    -ms-flex-align: center;
    -webkit-box-pack: center;
    -ms-flex-pack: center;
}

.wrapper-with-overlay .loading-overlay .spinning {
    -webkit-animation: spin 0.8s linear infinite;
    animation: spin 0.8s linear infinite;
}

@-webkit-keyframes spin {
    100% { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}

@keyframes spin {
    100% { -webkit-transform: rotate(360deg); transform: rotate(360deg); }
}