Include CSS classes around form elements

Per issue #75317

One other thing I was wondering about. Is it very complicated to wrap each form-item in a div that has a unique id (or give each form-item a unique id)? I realize you already have id's for each input type, but if I use those to reposition with CSS, the label gets left behind. Ideally, the user could enter the desired id themselves when creating each form item. The reason I suggest this is because the id's that are currently used for the various inputs sometimes have spaces in them, and this is not allowed in CSS. Hence, you cannot style it specifically anyway.

I hope that doesn't sound too demanding, but I think it would solve a lot of formatting issues that people have been having. But, for now, I will use the theming options. What I can do later is post a tutorial on how to use theming in a step-by-step manner, from a newcomer's perspective.