Can I decide when the Web Widget (Classic) is visible on the page?

Question

Can I decide when the Web Widget (Classic) is visible on the page? 

Answer 

You can use the zIndex setting to change how the Web Widget (Classic) appears in comparison to other elements appearing in the same location on your site.

For more information, see the developer documentation for zIndex and this article for examples: Using z-index in the Web Widget (Classic).