JSFiddle - React, Tailwind, and code Playground

HTML

<div id="square">
<table>
      <tr>
        <td>1</td>
        <td>2</td>
        <td>3</td>
      </tr>
      <tr>
        <td>4</td>
        <td>5</td>
        <td>6</td>
      </tr>
      <tr>
        <td>7</td>
        <td>8</td>
        <td>9</td>
      </tr>
</table>
</div>

CSS

td { border: 1px solid black; width: 33%; height: 100%; }

        table { position: absolute; width: 100%; height: 100%; }
        tr { width: 100%; height: 33%; }
        tbody { width: 100%; height: 100%; }

        #square{ width: 100%; padding-bottom: 100%; height: 0; }