una/template/_email_header.html

<html><head></head>
<body bgcolor="#eee" style="margin:0; padding:0;">

<div style="padding:20px; background-color:#eee;">

    <table width="600" border="0" cellspacing="0" cellpadding="0" align="center">

        <tr><td valign="top">
            
            <div style="color:#333; padding:20px; border:1px solid #999; background-color:#fff; font:14px Helvetica Neue, Helvetica, Arial, Verdana, sans-serif;">
                <div style="border-bottom:2px solid #eee; padding-bottom:10px; margin-bottom:20px; font-weight:bold; font-size:22px; color:#999;">{site_name}</div>