Layers are to show all the HTML elements in a relationship as parent-child as many layers. In other words, this field breaks down all sections of each one of your web pages.
For instance, your webpage can be seen with the following structure:
body > section 1 > column > div > a > img
Additionally, if you click on the eye icon, it will hide the specific part of your webpage.
CxContent::END::content - article::body