JSFiddle - React, Tailwind, and code Playground

HTML

<h1>Header</h1>
<div class='row'>
    <div class="container">
        <div class="inner blue">0</div>
    </div>
    <div class="container">
        <div class="inner red">1</div>
    </div>
    <div class="container">
        <div class="inner green">2</div>
    </div>
    <div class="container">
        <div class="inner blue">0</div>
    </div>
    <div class="container">
        <div class="inner red">1</div>
    </div>
    <div class="container">
        <div class="inner green">2</div>
    </div>
</div>
<div class='row'>
    <div class="container">
        <div class="inner blue">3</div>
    </div>
    <div class="container">
        <div class="inner green">4</div>
    </div>
    <div class="container">
        <div class="inner red">5</div>
    </div>
    <div class="container">
        <div class="inner blue">0</div>
    </div>
    <div class="container">
        <div class="inner red">1</div>
    </div>
    <div class="container">
        <div class="inner green">2</div>
    </div>
</div>
<div class='row'>
    <div class="container">
        <div class="inner blue">0</div>
    </div>
    <div class="container">
        <div class="inner red">1</div>
    </div>
    <div class="container">
        <div class="inner green">2</div>
    </div>
    <div class="container">
        <div class="inner green">6</div>
    </div>
    <div class="container">
        <div class="inner red">7</div>
    </div>
    <div class="container">
        <div class="inner blue">8</div>
    </div>
</div>

CSS

.container {
    display: inline-block;
    position: relative;
    width: calc(100% / 3);
    padding: 0px;
}
.container:after {
    content:'';
    display: block;
    margin-top: 75%;
    background-color: #000;
}
.inner {
    font-size: 300%;
    font-weight: bold;
    text-align: center;
    text-shadow: 4px 4px 2px rgba(0, 0, 0, 0.5);
    color: #fff;
    position: absolute;
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
}
.row {
    white-space: nowrap;
    overflow: hidden;
}
.blue {
    background-color: #09a;
}
.green {
    background-color: #693;
}
.red {
    background-color: #500;
}
h1 {
    font-size: 300%;
    background-color: #ddd;
    padding:5mm;
}