<link href="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/3.3.0/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>A Simple Responsive HTML Email</title>
<style type="text/css">
body {margin: 0; padding: 0; min-width: 100%!important;}
.content {width: 100%; max-width: 600px;}
</style>
</head>
<body yahoo bgcolor="#f6f8f1">
<table width="100%" bgcolor="#f6f8f1" border="0" cellpadding="0" cellspacing="0">
<tr>
<td>
<table class="content" align="center" cellpadding="0" cellspacing="0" border="0">
<tr>
<td>
Hello!
</td>
</tr>
</table>
</td>
</tr>
</table>
</body>
</html>
1. Create Main container Table
2. Create Another table inside it
3. Create Rows as in <tr> according to requirements. color them
4. Inside rows td you can add another table.
