JSFiddle - React, Tailwind, and code Playground

HTML

<table style="font-size: 12px; width: 640px;" border="0" cellspacing="15" cellpadding="15" align="center">
<tbody>
<tr>
    <td>Первая ячейка</td>
    <td>вторая ячейка</td>
</tr>
</tbody>
</table>

CSS

table tr:hover td:first-child { background: blue;}
table tr:hover td:last-child { background: red;}