Horizon was using a standard select input. Unfortunately, this type of input is only customizable to a small extent. Also, a bug was noted. Things were being marked as btn-groups that were not button groups. This was fixed. Co-Authored-By: Ryan Peters <rjpeter2@gmail.com> Co-Authored-By: Matthew Wood <woodm1979@gmail.com> Co-Authored-By: Brian Tully <brian.tully@hp.com> Change-Id: I048f001bf71c5d9a8d13451b7e5a892122f481c8 Partially-implements: blueprint horizon-theme-css-reorg