Clean up widget styling

[righteousrenegade]

Validation on entry fields. Jquery.validate is included but not used. Let's use it some.

Make expiration date on one line.
Find out why bullet points are off page.
Ensure responsive design for this.

[michaelblinn]

@biscuitehh has started on this: http://giv2giv.biscuitlabs.com/widget.html