JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr>
        <td>col 1 testtestteststtset</td>
        <td>col 2</td>
    </tr>
    <tr>
        <td>col 1 testtestteststtset</td>
        <td>col 2</td>
    </tr>
    <tr>
        <td>col 1 testtestteststtset</td>
        <td>col 2</td>
    </tr>
</table>

CSS

body {
    margin: 50px;
}

table {
    position: relative;
    margin: auto;
}

table td {
    border: 1px solid black;
    padding: 5px;
}

JavaScript

var columnWidth1 = $('td:first-child').width(),
    columnWidth2 = $('td:last-child').width(),
    offset = (columnWidth1 - columnWidth2) / 2;

$('table').css('right', offset + 'px');