JSFiddle - React, Tailwind, and code Playground

HTML

<table id="results">
    <thead>
        <tr>
            <td>UF</td>
            <td>Cliente</td>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>show</td>
            <td>button 1</td>
        </tr>
                <tr>
                    <td>hide</td>
                    <td>hide</td>
                </tr>
        <tr>
            <td>show</td>
            <td>button 2</td>
        </tr>
                <tr>
                    <td>hide</td>
                    <td>hide</td>
                </tr>
    </tbody>
</table>

CSS

thead {
    font-weight: bold;
}
thead td:first-child {
    width: 30px;
}