This video explains the cryptic language behind the WDN page layouts, and how to apply them in the UNL CMS.
Video doesn't show "how" to insert the layout. It only talks about the actual layouts you can select. Doesn't show you how to put text into the layout. Also, would like to see "placeholder" options shown in how-to. What are those for?
Apparently my CMS wasn't working (probably my computer...ID10T error!) Wasn't showing some of the things related to comment above. Working now and all is obvious!
Copy the following code into your page
<div style="padding-top: 56.25%; overflow: hidden; position:relative; -webkit-box-flex: 1; flex-grow: 1;">
style="bottom: 0; left: 0; position: absolute; right: 0; top: 0; border: 0; height: 100%; width: 100%;"
title="Video Player: About Page Layouts in the UNL CMS"