Help positioning gravity forms "submit button" in-line with single form field

Hey there Enfold team,

Got another question. I am not sure this is something that qualifies for your support forum but the guys at Gravity Forms were no help so I figured I would try here.

I want to create a one line subscriber form where the submit button is in line with the field itself.

Essentially, I want to take this form

and make it look something like this

Here is the link to the live page itslef. http://raymmar.com/my-blog/

Is there an easy way to float the submit button so that it sits inline with the form field like this while maintaining the responisveness of the element?

Thanks in advance for any help.