Github user Leemoonsoo commented on the pull request: https://github.com/apache/incubator-zeppelin/pull/423#issuecomment-156297071 one small detail is  Isn't it make more sense to move shadow to the bottom of the setting panel, when it is expanded?
--- If your project is set up for it, you can reply to this email and have your reply appear on GitHub as well. If your project does not have this feature enabled and wishes so, or if the feature is enabled but not working, please contact infrastructure at infrastruct...@apache.org or file a JIRA ticket with INFRA. ---