SOLVED: Needed to declare a height on the main image that is nested in the table.
QUESTION: I have two tables that I'm trying to stack on top of one another in an html email but am getting a gap between them in Outlook 2016 only. The red box should touch the grey horizontal line. See picture below. All other version of Outlook are good. I've removed cell padding, borders, and spacing from all tables so I'm at a loss on this one. I also have this table aligned top. Any tricks to getting this to work in MSO 2016?
<table align="right" width="190" border="0" cellspacing="0" cellpadding="0" style="mso-table-lspace:0pt; mso-table-rspace:0pt; margin: 0 auto; border-collapse:collapse;" bgcolor="#6e7171">
<tr>
<td align="center" width="1">
<!-- margin SPACER-->
<table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse;">
<tr>
<td width="1" height="1" style="mso-line-height-rule:exactly; line-height:1px; font-size:0;">
<img src="images/sp.gif" width="1" height="1" alt="" border="0" style="display:block;" />
</td>
</tr>
</table>
<!-- /margin SPACER-->
</td>
<td align="center" bgcolor "#6e7171" class="hideMobile" width="188" align="left" class="outlookpadding" valign="top">
<table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse;">
<tr>
<td width="1" height="1" style="mso-line-height-rule:exactly; line-height:1px; font-size:0;">
<img src="images/sp.gif" width="1" height="1" alt="" border="0" style="display:block;" />
</td>
</tr>
</table>
<table class="hideMobile" bgcolor "#6e7171" align="center" width="188" border="0" cellspacing="0" cellpadding="0" style="mso-table-lspace:0pt; mso-table-rspace:0pt; margin: 0 auto; border-collapse:collapse; margin: 0 auto;">
<tr>
<td align="center">
<table width="188" cellpadding="0" class="deviceWidth" cellspacing="0" border="0" bgcolor="#ffffff" align="center" style="border-collapse: collapse;">
<tr>
<td>
<a target="_blank" href="#"><img src="images/laptop.jpg" alt="Using laptop trackpad" width="190" style="display: block; width: 190px; " align="center"></a>
</td>
</tr>
<tr>
<td class="showMobile hideyahoo" valign="top" align="right" bgcolor="#ffffff" style="display: block; text-align: left; font-size: 14px; line-height: 18px; font-family:Arial, Helvetica, sans-serif;color:#e51b3f; mso-line-height-rule: exactly; padding-right: 10px; padding-left: 10px; padding-top: 18px; font-weight: bold;">Ask the right questions.</td>
</tr>
<tr>
<td class="showMobile hideyahoo" valign="top" align="right" display="block" bgcolor="#ffffff" style="text-align: left; font-size: 13px; line-height: 18px; font-family:Arial, Helvetica, sans-serif;color:#514d4d; mso-line-height-rule: exactly; padding-right: 10px; padding-left: 10px; padding-bottom: 15px; padding-top: 15px; ">Having an honest discussion with your doctor can help you take a more active role in your care. These conversation starters can help you know what to ask.</td>
</tr>
</table>
</td>
<td width="1">
<!-- margin -->
<table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse;">
<tr>
<td width="1" height="1" style="mso-line-height-rule:exactly; line-height:1px; font-size:0;">
<img src="images/sp.gif" width="1" height="1" alt="" border="0" style="display:block;" />
</td>
</tr>
</table>
<!-- /margin -->
</td>
</tr>
</table>
<table border="0" cellpadding="0" cellspacing="0" style="border-collapse: collapse;">
<tr>
<td width="1" height="1" style="mso-line-height-rule:exactly; line-height:1px; font-size:0;">
<img src="images/sp.gif" width="1" height="1" alt="" border="0" style="display:block;" />
</td>
</tr>
</table>
</td>
</tr>
</table>
<table align="right" valign="top" border="0" cellspacing="0" cellpadding="0" bgcolor="#ed1849" height="49" width="192" style="padding: 0; height: 49px; margin: 0 auto; border-collapse: collapse; display">
<tr>
<td style="padding-left: 10px;" height="44">
<table valign="top" border="0" cellspacing="0" cellpadding="0" bgcolor="#ed1849" height="44" style="border-collapse: collapse;">
<tr>
<td border="0" cellspacing="0" cellpadding="0" width="100%" align="center" valign="bottom" style="text-align: left; color: #ffffff; background-color: #ed1849; font-family:Arial, Helvetica, sans-serif; font-weight: bold; font-size: 13px; mso-line-height-rule: exactly;"><a href="#" target="_blank" style="color:#ffffff; text-decoration: none; font-weight: normal;">GET QUESTIONS</a></td>
</tr>
<tr>
<td border="0" cellspacing="0" cellpadding="0" bgcolor="#ed1849">
<table border="0" cellspacing="0" cellpadding="0" bgcolor="#ed1849">
<tr>
<td border="0" cellspacing="0" cellpadding="0" align="center" valign="middle" style="text-align: left; color: #ffffff; background-color: #ed1849; font-family:Arial, Helvetica, sans-serif; font-weight: bold; font-size: 13px; mso-line-height-rule: exactly;"><a href="#" target="_blank" style="color:#ffffff; text-decoration: none; font-weight: normal;">FOR YOUR DOCTOR</a></td>
<td height="11" bgcolor="#ed1849" align="left" valign="middle" style="padding-left: 7px; vertical-align: middle; font-size: 0;"><img valign="middle" width="8" height="11" style=" display: block; width: 8px; height:11px;" src="images/arrow.jpg" alt="arrow"></td>
</tr>
</table>
</td>
</tr>
</table>
</td>
</tr>
</table>
