JSFiddle - React, Tailwind, and code Playground

HTML

<table cellpadding="0" cellspacing="0" width="100%" style="border: 1px;" rules="none">
    <tbody>
        <tr>
            <th style="width: 96px;">Column 1</th>
            <th style="width: 96px;">Column 2</th>
            <th style="width: 96px;">Column 3</th>
        </tr>
        <tr>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
        </tr>
        <tr class="show-border">
            <td>&nbsp;</td>
            <td></td>
            <td>&nbsp;</td>
        </tr>
        <tr>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
            <td>&nbsp;</td>
        </tr>
    </tbody>
</table>

CSS

.show-border td {
    border-top: thin solid; 
    border-bottom: thin solid;
}

.show-border td:first-child {
    border-left: thin solid;
}

.show-border td:last-child {
    border-right: thin solid;
}