Such framework are abstraction + stylized components. They will continue to fill the same role. I can tell my client's IT guy "just put a div with a class of .

Such framework are abstraction + stylized components. They will continue to fill the same role. I can tell my client's IT guy "just put a div with a class of .card and then a div with class .card-body in your WYSIWYG and you will have the correct display". That the framework use floats or flex or css grid is irrelevant to the end poweruser.