I'm trying to center the columns in the below, but when I add center aligning to them, they are no longer responsive. Does anyone have an idea where I'm going wrong? I've been fiddling with it for hours. Thank you for any help!


    <table align="center" border="0" cellpadding="0" cellspacing="0" width="100%">
                                                                                                    <tbody>
                                                                                                        <tr>
                                                                                                            <td align="center" style="padding6">
                                                                                                            <table border="0" cellpadding="0" cellspacing="0" class="responsive-table" style="border-collapse: collapse;" width="100%">
                                                                                                                <tbody>
                                                                                                                    <tr>
                                                                                                                        <td align="center">
                                                                                                                        <table align="left" border="0" cellpadding="0" cellspacing="0" class="responsive-table" style="border: 4px solid #ffffff;" width="165">
                                                                                                                            <tbody>
                                                                                                                                <tr>
                                                                                                                                    <td>
                                                                                                                                    <table cellpadding="0" cellspacing="0" width="100%">
                                                                                                                                        <tbody>
                                                                                                                                            <tr>
                                                                                                                                                <td height="140" style="border: 1px solid #dddddd;">
                                                                                                                                                <table cellpadding="0" cellspacing="0" width="100%">
                                                                                                                                                    <tbody>
                                                                                                                                                        <tr>
                                                                                                                                                            <td align="center" height="120" style="padding: 5px; font-size: 16px;">
                                                                                                                                                            <p><img alt="alt_text" border="0" height="120" src="https://app.clickdimensions.com/blob/dimensionalcom-agdc5/files/gene_fama_120x120.jpg" style="height: auto; font-family: sans-serif; font-size: 15px; line-height: 20px; color: #ffffff;" width="120" /></p>
                                                                                                                                                            </td>
                                                                                                                                                        </tr>
                                                                                                                                                        <tr>
                                                                                                                                                            <td align="center" bgcolor="#f0f0f0" class="MsoNormal" style="padding: 0px 0; font-size: 12px; line-height: 25px; font-family: 'Lato', 'Arial', sans-serif; font-weight:300; color: #666666;">Eugene Fama</td>
                                                                                                                                                        </tr>
                                                                                                                                                    </tbody>
                                                                                                                                                </table>
                                                                                                                                                </td>
                                                                                                                                            </tr>
                                                                                                                                        </tbody>
                                                                                                                                    </table>
                                                                                                                                    </td>
                                                                                                                                </tr>
                                                                                                                            </tbody>
                                                                                                                        </table>

                                                                                                                        <table align="left" border="0" cellpadding="0" cellspacing="0" class="responsive-table" style="border: 4px solid #ffffff;" width="165">
                                                                                                                            <tbody>
                                                                                                                                <tr>
                                                                                                                                    <td class="day-padding">
                                                                                                                                    <table cellpadding="0" cellspacing="0" width="100%">
                                                                                                                                        <tbody>
                                                                                                                                            <tr>
                                                                                                                                                <td height="140" style="border: 1px solid #dddddd;">
                                                                                                                                                <table cellpadding="0" cellspacing="0" width="100%">
                                                                                                                                                    <tbody>
                                                                                                                                                        <tr>
                                                                                                                                                            <td align="center" height="120" style="padding: 5px; font-size: 16px;">
                                                                                                                                                            <p><img alt="alt_text" border="0" height="120" src="https://app.clickdimensions.com/blob/dimensionalcom-agdc5/files/ken_french_120x120.jpg" style="height: auto; font-family: sans-serif; font-size: 15px; line-height: 20px; color: #ffffff;" width="120" /></p>
                                                                                                                                                            </td>
                                                                                                                                                        </tr>
                                                                                                                                                        <tr>
                                                                                                                                                            <td align="center" bgcolor="#f0f0f0" class="MsoNormal" style="padding: 0px 0; font-size: 12px; line-height: 25px; font-family: 'Lato', 'Arial', sans-serif; font-weight:300; color: #666666;">Kenneth French</td>
                                                                                                                                                        </tr>
                                                                                                                                                    </tbody>
                                                                                                                                                </table>
                                                                                                                                                </td>
                                                                                                                                            </tr>
                                                                                                                                        </tbody>
                                                                                                                                    </table>
                                                                                                                                    </td>
                                                                                                                                </tr>
                                                                                                                            </tbody>
                                                                                                                        </table>

                                                                                                                        <table align="left" border="0" cellpadding="0" cellspacing="0" class="responsive-table" style="border: 4px solid #ffffff;" width="165">
                                                                                                                            <tbody>
                                                                                                                                <tr>
                                                                                                                                    <td class="day-padding">
                                                                                                                                    <table cellpadding="0" cellspacing="0" width="100%">
                                                                                                                                        <tbody>
                                                                                                                                            <tr>
                                                                                                                                                <td height="140" style="border: 1px solid #dddddd;">
                                                                                                                                                <table cellpadding="0" cellspacing="0" width="100%">
                                                                                                                                                    <tbody>
                                                                                                                                                        <tr>
                                                                                                                                                            <td align="center" height="120" style="padding: 5px; font-size: 16px;">
                                                                                                                                                            <p><img src="https://app.clickdimensions.com/blob/dimensionalcom-agdc5/files/ed_lazear_120x120.jpg" /></p>
                                                                                                                                                            </td>
                                                                                                                                                        </tr>
                                                                                                                                                        <tr>
                                                                                                                                                            <td align="center" bgcolor="#f0f0f0" class="MsoNormal" style="padding: 0px 0; font-size: 12px; line-height: 25px; font-family: 'Lato', 'Arial', sans-serif; font-weight:300; color: #666666;">Edward Lazear</td>
                                                                                                                                                        </tr>
                                                                                                                                                    </tbody>
                                                                                                                                                </table>
                                                                                                                                                </td>
                                                                                                                                            </tr>
                                                                                                                                        </tbody>
                                                                                                                                    </table>
                                                                                                                                    </td>
                                                                                                                                </tr>
                                                                                                                            </tbody>
                                                                                                                        </table>
                                                                                                                        </td>
                                                                                                                    </tr>
                                                                                                                </tbody>
                                                                                                            </table>
                                                                                                            </td>
                                                                                                        </tr>
                                                                                                    </tbody>
                                                                                                </table>