A Johnson Box is a box commonly found at the top of direct mail letters, containing the key message of the letter. The purpose of it is to draw the reader's attention to this key message first, and hopefully grab their attention, enticing them to read the rest of the letter.
In blogs a Johnson Box is often used to promote a free lead magnet / download, with the intention to gaining new followers or leads to your email database.
The coding for a Johnson box can be found on these websites:
https://s3.amazonaws.com/digitalmarketer-downloads/website/content/uploads/2015/09/johnson-box-code.txt
<div style="padding: 15px; margin-bottom: 15px; background: #ffffde; border: 1px solid #ddd; width: 85%;" align="center">
<h2>Type the Name Of Your Offer Here</h2> Type the benefit of taking your offer here <a href="http://followupmachine.com/3-part-email-template" target="_blank">Click here to access [OFFER]</a> </div>
http://www.warriorforum.com/website-design/173691-how-do-you-make-johnson-box-urgent.html
<div style="display: block; background: #ffffff; border: 1px solid #000000; width: 800px; height:50px; text-align: center;"> whatever you want in here </div>