border: collapse + display: none on tbody rows.

by gonchuki

HTML

<table>
    <thead>
        <tr>
            <th>FOO</th>
        </tr>
    </thead>
    <tbody>
        <tr>
            <td>BAR</td>
        </tr>
    </tbody>
</table>

CSS

table {
    border: 3px solid #f80;
    width: 100%;
    border-collapse: collapse;
    box-shadow: 0 3px 3px rgba(0,0,0,0.5);
}

tbody tr {
    display: none;
}