Ruby on Rails select-boxes styling

I will not use any code changes in html or ruby. I can use only javascript and css for making it like same in the example. the html will remain the same. Message me for details. I can start now and finish it

Hi, I have over 4 years of experience in php and ruby on rails. I would like to have the opportunity to get it done. Queries: 1. On how many pages, does this change need to be done?