.loader-container {
    position: fixed;
    display: block;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.3);
    z-index: 10000;
}
.lds-facebook {
    display: inline-block;
    position: relative;
    width: 80px;
    height: 80px;

    top: 50%;
    left: 50%;

    transform: translate(-50%, -50%);
}
.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;
    }
}