#load {
    position: fixed;
    width: 100vw;
    height: 100vh;
    background: #000;
    z-index: 99999;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;

}

:root {
    --b: #262626;
    --w: #dcdcd2;
    --s: 2s;
    /* change speed */
}

#load, #load:before, #load:after {
    box-sizing: border-box;
    transform-style: preserve-3d;
}



.content {
    width: 50vmin;
    height: 50vmin;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    perspective: 1000vmin;
}

.bars {
    width: 100%;
    height: 100%;
    position: absolute;
    padding: 6.5vmin 3vmin;
    animation: mirror1 calc(var(--s) * 2) ease 0s infinite;
}

.bars+.bars {
    transform: rotate(90deg) rotateX(180deg);
    animation: mirror2 calc(var(--s) * 2) ease calc(var(--s) / 2) infinite;
}

.bar {
    width: 44vmin;
    height: 3vmin;
    margin: 2vmin 0vmin;
    background: linear-gradient(90deg, #fff0 33%, var(--w) 33% 67%, #fff0 67% 100%);
    animation: grow var(--s) ease-in-out 0s infinite alternate;
    background-size: 300%;
    background-position-x: -203%;
}

@keyframes mirror1 {
    0%, 47%, 99.99%, 100% {
        transform: rotate(180deg) rotateX(0deg);
    }

    47.01%, 99.98% {
        transform: rotate(180deg) rotateX(180deg);
    }
}

@keyframes mirror2 {
    0%, 47%, 99.99%, 100% {
        transform: rotate(90deg) rotateX(180deg);
    }

    47.01%, 99.98% {
        transform: rotate(90deg) rotateX(0deg);
    }
}

@keyframes grow {
    0%, 25% {
        background-position-x: -297%;
    }

    45%, 55% {
        background-position-x: -250%;
    }

    75%, 100% {
        background-position-x: -203%;
    }
}

.bar:nth-child(2) {
    animation-delay: calc(var(--s) * -0.02);
}

.bar:nth-child(3) {
    animation-delay: calc(var(--s) * -0.04);
}

.bar:nth-child(4) {
    animation-delay: calc(var(--s) * -0.06);
}

.bar:nth-child(5) {
    animation-delay: calc(var(--s) * -0.08);
}

.bar:nth-child(6) {
    animation-delay: calc(var(--s) * -0.1);
}

.bar:nth-child(7) {
    animation-delay: calc(var(--s) * -0.12);
}

.bars:nth-child(2) .bar:nth-child(1) {
    animation-delay: calc(calc(var(--s) * -0.001) - calc(var(--s) / 2));
}

.bars:nth-child(2) .bar:nth-child(2) {
    animation-delay: calc(calc(var(--s) * -0.02) - calc(var(--s) / 2));
}

.bars:nth-child(2) .bar:nth-child(3) {
    animation-delay: calc(calc(var(--s) * -0.04) - calc(var(--s) / 2));
}

.bars:nth-child(2) .bar:nth-child(4) {
    animation-delay: calc(calc(var(--s) * -0.06) - calc(var(--s) / 2));
}

.bars:nth-child(2) .bar:nth-child(5) {
    animation-delay: calc(calc(var(--s) * -0.08) - calc(var(--s) / 2));
}

.bars:nth-child(2) .bar:nth-child(6) {
    animation-delay: calc(calc(var(--s) * -0.1) - calc(var(--s) / 2));
}

.bars:nth-child(2) .bar:nth-child(7) {
    animation-delay: calc(calc(var(--s) * -0.12) - calc(var(--s) / 2));
}