Structuring of form fields

[nofue]

When forms become bigger, the width parameter helps a lot. However, it cannot cater every need, hence here's the question:

Is there a way to put form fields in groups to make them flow as a group when the width changes?
Is there a way to set the number of lines in "textarea"?
Can field be commanded to stay on either side of the form? (like d-flex classes, f.e.)
Can a line break be induced in forms to send the next field to the beginning of a new line?