.nk-preloader {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    left: 0;
    overflow: hidden;
    z-index: 3000;

    // background animation
    .nk-preloader-bg {
        position: absolute;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background-color: #000;
        background-repeat: no-repeat;
        background-position: 0 50%;
        background-size: cover;
    }

    // content
    .nk-preloader-content {
        position: absolute;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;

        > div {
            position: absolute;
            top: 50%;
            left: 0;
            width: 100%;
            text-align: center;
            transform: translateY(-50%);
        }
    }

    // skip
    .nk-preloader-skip {
        position: absolute;
        right: 0;
        bottom: 0;
        padding: 25px;
        font-size: .95rem;
        line-height: 1;
        cursor: pointer;
        animation: nk-preloader-skip 6s linear;
        z-index: 1;
    }
}

@keyframes nk-preloader-skip {
    0%,
    90% {
        visibility: hidden;
        opacity: 0;
    }
    100% {
        visibility: visible;
        opacity: 1;
    }
}

// preloader animation
.nk-preloader-animation {
    position: relative;
    display: block;
    margin: 30px auto;
    opacity: .7;

    &::after,
    &::before {
        content: "";
        position: absolute;
        display: block;
    }
    &,
    &::after,
    &::before {
        width: 4px;
        height: 4px;
        background-color: rgba(#fff, .3);
        border-radius: 2px;
    }

    animation: nk-preloader-animation 1.2s linear infinite .4s;
    &::before {
        left: -20px;
        animation: nk-preloader-animation 1.2s linear infinite 0s;
    }
    &::after {
        right: -20px;
        animation: nk-preloader-animation 1.2s linear infinite .8s;
    }
}

@keyframes nk-preloader-animation {
    0%,
    60%,
    100% {
        background-color: rgba(#fff, .3);
    }
    30% {
        background-color: #fff;
    }
}