Squashed 'app/' changes from 43b6039..53bff5f

53bff5f More CSS for header and indicator

git-subtree-dir: app
git-subtree-split: 53bff5f703e7b2f26e56a14728b3815a097dc1b7
Merge commit 'f8bc33bcb8747e737e3655235cd6c0344249117b'