.ajax-loading {
    position:fixed;
    top:0;
    left:0;
    right:0;
    bottom:0;
    background-color:rgba(0,0,0,0.8);
    z-index:9999;
    display:flex;
    flex-direction:column;
    justify-content:center;
    align-items:center;
}

    .ajax-loading span {
        color: white;
        font-size: 22px;
        text-transform: lowercase;
    }

.lds-facebook {
    display: inline-block;
    position: relative;
    width: 80px;
    height: 80px;
}

    .lds-facebook div {
        display: inline-block;
        position: absolute;
        left: 8px;
        width: 16px;
        background: #fff;
        animation: lds-facebook 1.2s cubic-bezier(0, 0.5, 0.5, 1) infinite;
    }

        .lds-facebook div:nth-child(1) {
            left: 8px;
            animation-delay: -0.24s;
        }

        .lds-facebook div:nth-child(2) {
            left: 32px;
            animation-delay: -0.12s;
        }

        .lds-facebook div:nth-child(3) {
            left: 56px;
            animation-delay: 0;
        }

@keyframes lds-facebook {
    0% {
        top: 8px;
        height: 64px;
    }

    50%, 100% {
        top: 24px;
        height: 32px;
    }
}