I have a login form on a site I am currently building, and I also have a signup form. I would like to add some fancy animation to it by rotating the div to the other side wh
The only way to make animations like the ones you are describing is manipulating the DOM. There are not many ways I cant think of to do this without using javascript.
With using pure HTML, you could build a template that is identical for DIV A and B, then on a POST change between the two, however this will not make the flashy animation like the one you desire.