Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
I don't think it is possible to get rid of the extra padding. It is possibly by default there. I think you can reduce the size to get the required field. Try setting it to a negative value.