HTML Table width

<table>
    <tr>
        <td style="background-color: pink">auto</td>
        <td>auto</td>
        <td>auto</td>
        <td>auto</td>
        <td>auto</td>
    </tr>
    <tr>
        <td>auto</td>
        <td style="width: 75px;background-color: pink">75px</td>
        <td style="width: 75px;">75px</td>
        <td style="width: 75px;">75px</td>
        <td style="width: 75px;">75px</td>
    </tr>
    <tr>
        <td>auto</td>
        <td>auto</td>
        <td style="width: 150px;background-color: pink">150px</td>
        <td style="width: 150px;">150px</td>
        <td style="width: 150px;">150px</td>
    </tr>
    <tr>
        <td>auto</td>
        <td>auto</td>
        <td>auto</td>
        <td style="width: 10%;background-color: pink">10%</td>
        <td style="width: 10%;">10%</td>
    </tr>
    <tr>
        <td>auto</td>
        <td>auto</td>
        <td>auto</td>
        <td>auto</td>
        <td style="width: 50%;background-color: pink">50%</td>
    </tr>
</table>