The layout of the Login Form and Register Form is included in one container with the following structure which is hard coded in the page.

  <div id="Container">

      <div id="LoginForm">...</div>

      <div id="Register">...</div>

  </div>      

  Therefore the layout is not controlled by the user. In order to achieve this goal, I sggest:

  1)Add 3 classname for the above 3 div and put it in the template css file which the user can customize

  2)Add an option to show both form