JSFiddle - React, Tailwind, and code Playground

HTML

<table>
    <tr>
        <td rowspan="2">Kitten</td>
        <td>Puppy</td>
    </tr>
    <tr>
        <td>Kitten</td>
    </tr>
<table>

CSS

td {
    background: green;
}

td[rowspan] {
    background: none;
}