Pick, Group and Rank question - Full time screen and change items dimensions

Hi All,

I am trying the best that I can to have a full time screen mode of this question but i have the following problems that I am not able to resolve, any help would be much appreciated.

The problems are:

1. Change dimensions of the group box
2. Make items and group boxes of the same dimensions
3. Use full time screen mode and reduce the length of the slide bar on the right, so user can access to full time mode and do not have to bother to use the slider so many times.
   
   Find enclosed a screenshot of the question. Highlighted in yellow the white space that i want to reduce and the length of the slide bar that i want to reduce as well.