:root {
    --b: #262626;
    --w: #dcdcd2;
    --s: 2s;
    --bg-color: #f9f9f9;
    --text-color: #424242;
    --main-color: #35903e;
    --main-color2: #b9e937;
    --box-color: #00330593;
    --bg-box: #f5f5f5b6;
    --shadow-color: rgba(0, 0, 0, .2);
}

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

body {
    margin: 0;
    padding: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--b);
}

.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;
    border-radius: 6px;
    background: linear-gradient(90deg, #fff0 33%, var(--main-color) 33% 51%, var(--main-color2) 51% 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));
}