.loader {
    position: fixed;
    left: 0;
    top: 0;
    width: 100vw;
    height: 100vh;
    background-color: #fff;
    -webkit-transform-style: preserve-3d;
    -moz-transform-style: preserve-3d;
    transform-style: preserve-3d;
    text-align: center;
    z-index: 999;
}

.loader-img {
    position: relative;
    width: auto;
    top: 50%;
    -webkit-transform: translateY(-50%);
    -moz-transform: translateY(-50%);
    transform: translateY(-50%);
}

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

.lds-facebook div {
    display: inline-block;
    position: absolute;
    left: 8px;
    width: 14px;
    background-color: #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;
    background-color: #fff;
}

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

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

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