I have figure it out using Table html to build 2 columns responsive email template in co pilot. here is the html code with a header and footer.
<!-- background table --><table id="bgtable" align="center" border="0" cellpadding="0" cellspacing="0" height="100%" width="100%">
<tr>
<td align="center" valign="top">
<!-- container 600px -->
<table border="0" cellpadding="0" cellspacing="0" width="600px" style="...">
<!--------------- HEADER ----------------------------------------------------------------------------------------------------------------------------------->
<tr>
<td height="10" style="font-size: 0; line-height: 0;"> </td>
</tr>
<tr>
<td align="left">
<img src="
http://www.gainsight.com/wp-content/uploads/2015/09/logo.png"/>;
</td>
</tr>
<tr>
<td height="10" style="font-size: 0; line-height: 0;"> </td>
</tr>
<tr>
<td height="10" style="font-size: 0; line-height: 0;"> </td>
</tr>
<!--------------- START CONTENT ----------------------------------------------------------------------------------------------------------------------------------->
<tr>
<td valign="top">
<!-------------- SINGLE COLUMN ----------------------------------------------------------------------------------------------------------------------------------->
<table border="0" cellpadding="0" cellspacing="0" width="600px" align="left" >
<tr>
<td align="left"><!-- REMOVE ANY PADDING FROM TD -->
<table align="left" border="0" cellpadding="0" cellspacing="0" style="display: inline-block;" width="600px">
<tr >
<td align="left" valign="top" style="padding: 5px;20px;5px;">
<strong style="font-weight: bold; box-sizing: border-box;color: rgb(45, 43, 126); font-size: 24px; font-family: Arial;">Hello</strong>
</td>
</tr>
<tr>
<td align="left" valign="top" style="padding: 5px;20px;5px;" >
<p style="box-sizing: border-box; padding-top: 0px; padding-bottom: 0px; margin: 0px;color: rgb(96, 96, 96); font-family: Arial;">
Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).
</p>
</td>
</tr>
</table>
</td>
</tr>
</table>
<!-------------- TWO COLUMNS ----------------------------------------------------------------------------------------------------------------------------------->
<table border="0" cellpadding="0" cellspacing="0" width="600px" align="center" >
<tr>
<td>
</td>
</tr>
<tr>
<td align="center"><!-- REMOVE ANY PADDING FROM TD -->
<!-- LEFT TABLE -->
<table align="left" border="0" cellpadding="5px" cellspacing="0" style="display: inline-block;" width="300px">
<tr>
<td style="padding: 5px;20px;5px;">
<center style="box-sizing: border-box;"><strong style="font-weight: bold; box-sizing: border-box; word-break: break-word;color: rgb(96, 96, 96); font-family: Arial;">
title
</strong></center>
</td>
</tr>
<tr>
<td style="padding: 5px;20px;5px;">
<p align="justify" style="box-sizing: border-box; padding-top: 0px; padding-bottom: 0px; margin: 0px;color: rgb(96, 96, 96); font-family: Arial;">
It is a long established fact that a reader will be distracted by the readable content of a page when looking at its layout. The point of using Lorem Ipsum is that it has a more-or-less normal distribution of letters, as opposed to using 'Content here, content here', making it look like readable English. Many desktop publishing packages and web page editors now use Lorem Ipsum as their default model text, and a search for 'lorem ipsum' will uncover many web sites still in their infancy. Various versions have evolved over the years, sometimes by accident, sometimes on purpose (injected humour and the like).
</p>
</td>
</tr>
</table>
<!-- RIGHT TABLE -->
<table align="left" border="0" cellpadding="0" cellspacing="0" style="display: inline-block;" width="300px">
<tr>
<td align="center" style="padding: 5px;20px;5px;" width="300px">
<img src="
http://www.gainsight.com/wp-content/uploads/2015/09/logo.png"/>;
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td>
</td>
</tr>
</table>
<!-------------- SINGLE COLUMN ----------------------------------------------------------------------------------------------------------------------------------->
<table border="0" cellpadding="0" cellspacing="0" width="600px" align="left" >
<tr>
<td>
</td>
</tr>
<tr>
<td align="left"><!-- REMOVE ANY PADDING FROM TD -->
<table align="left" border="0" cellpadding="0" cellspacing="0" style="display: inline-block;" width="600px">
<tr>
<td align="left" valign="top" style="padding: 5px;20px;5px;" >
<p style="box-sizing: border-box; padding-top: 0px; padding-bottom: 0px; margin: 0px;color: rgb(96, 96, 96); font-family: Arial;">
Best regards,
</p>
<p style="box-sizing: border-box; padding-top: 0px; padding-bottom: 0px; margin: 0px;color: rgb(96, 96, 96); font-family: Arial;">
the team
</p>
</td>
</tr>
</table>
</td>
</tr>
<tr>
<td>
</td>
</tr>
</table>
<!--------------- START CONTENT ----------------------------------------------------------------------------------------------------------------------------------->
</td>
</tr>
<!--------------START FOOTER ----------------------------------------------------------------------------------------------------------------------------------->
<tr>
<td align="center" valign="top">
<!-------------- SEVEN COLUMNS ----------------------------------------------------------------------------------------------------------------------------------->
<table border="0" cellpadding="0" cellspacing="0" width="600px" align="center" style="border: 1px solid rgb(238, 238, 238); background-color: rgb(238, 239, 239);" >
<tr>
<td align="center" width="100%">
</td>
</tr>
<tr>
<td align="center" width="100%">
placeholder for social icons
</td>
</tr>
<tr>
<td align="center" width="100%" style="padding: 5px;84px;84px;5px;">
<p style="box-sizing: border-box; padding-top: 0px; padding-bottom: 0px; margin: 0px;color: rgb(96, 96, 96);font-size: 10px; font-family: Arial;">
company address and details
</p>
</td>
</tr>
<tr>
<td align="center" width="100%" style="padding: 5px;84px;84px;5px;">
<p style="box-sizing: border-box; padding-top: 0px; padding-bottom: 0px; margin: 0px;color: rgb(96, 96, 96);font-size: 8px; font-family: Arial;">
Image Credits ........
</p>
</td>
</tr>
<tr>
<td align="center" width="100%">
</td>
</tr>
<tr>
<td align="center" width="100%">
</td>
</tr>
</table>
<!--------------END FOOTER ----------------------------------------------------------------------------------------------------------------------------------->
</td>
</tr>
</table>
<!-- container 600px -->
</td>
</tr>
</table>
<!-- background table -->