Adjustable size

Hi all!
I would like to ask you if there is a possibility to automatically scale the editor. I will explain more in depth whats my idea. I want to create an in-place edit cms so when the user clicks on the content it is transformed into a ckeditor but i dont want the content to be scrollable in the editor instead i want the editor to accomodate 100% of the content which is visible on the page? I think there should be a way to achieve this. Please help!