Up until now, I had been designing those optional form elements wrapped in divs with 'display:none;' in the style properties. My options then toggle that back and forth to show the form options.

CSS `display: none` can prevent certain ... That's the only way to know for sure. display:none removes the element from the flow of the page; meaning it's still in the DOM to interact with ...

Cascading Style Sheets (CSS) first dropped in 1996 ... going to be a very helpful layout feature going forward. Some display elements are traditionally difficult to style despite being commonly ...