<div class="poster">
    <div class="circle green"></div>
    <div class="triangle black"></div>
    <div class="triangle green"></div>
    <div class="square green"></div>
    <div class="triangle black"></div>
    <div class="square black"></div>
    <div class="square black"></div>
    <div class="square black"></div>
    <div class="square black"></div>
    <div class="square black"></div>
    <div class="square black"></div>
    <div class="square black"></div>
    <div class="square black"></div>
    <div class="square black"></div>
    <div class="letter green">g</div>
    <div class="letter green">r</div>
    <div class="letter green">i</div>
    <div class="letter green">d</div>
    <blockquote class="quote">
        <p>"<strong>The grid system is an aid, not a guarantee.</strong> It permits a number of possible uses and each designer can look for a solution appropriate to his personal style. But one must learn how to use the grid; it is an art that requires practice." <span class="quote-author">Josef Müller-Brockmann</span></p>
    </blockquote>
</div>
:root {
    font-size: 74.945vh;
    --green: #2e8405;
    --yellow: #cbbe0d;
}

* {
    box-sizing: border-box;
}

body {
    font-family: "Roboto", Arial, sans-serif;
    font-weight: 500;
    background-color: #0e0e0e;
}

.poster {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    grid-template-rows: repeat(5, 1fr) 0.37fr;
    grid-gap: 0.012em;
    width: 1em;
    height: 100vh;
    margin: 0 auto;
    background-color: var(--yellow);
    border: 0.029em solid #fff;
}

.black {
    background-color: #000;
}

.green {
    background-color: var(--green);
}

.circle {
    -webkit-clip-path: circle(29.5% at 50% 50%);
            clip-path: circle(29.5% at 50% 50%);
}

.triangle {
    -webkit-clip-path: polygon(100% 0, 0 100%, 100% 100%);
            clip-path: polygon(100% 0, 0 100%, 100% 100%);
}

.letter {
    display: flex;
    justify-content: center;
    align-items: center;
    font-size: 0.22em;
    color: var(--yellow);
    text-transform: uppercase;
}

.quote {
    grid-column: 3 / -1;
    grid-row: 5 / -1;
    font-size: 0.0142em;
    font-style: italic;
    line-height: 2;
    padding: 34% 0 0 1em;
}

.quote p {
    position: relative;
}

.quote strong,
.quote-author {
    font-weight: 900;
}

.quote-author {
    position: absolute;
    right: 3.5em;
    color: var(--green);
}
/*

Full-page view:

https://codepen.io/GeorgePark/full/gjMLXp/

------------------------------------------

Original Poster by Tom Davie:

http://studiotwentysix2.com/poster/grid.html

*/

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