How to make dropzone upload without setting class dropzone in form ?

I have a form with multiple form inputs and image upload using dropzone. The image upload area has a class called dropzone. When I put the class dropzone into the form the entire upload area style is going.

Means the uploaded thumbnails showing out side of the upload area. I want to use the dropzone without changing the class dropzone in from.  I tried initialising the dropzone programatically but that time the images is not posting into the controller.