We have a very large instance of Confluence and leveraged the custom header section + CSS with Documentation theme to build a top navigation under the global top bar (with Spaces, People, Create, etc.) at the space level - so we could easily jump around to relevant pages and spaces w/ in our own organization but not affecting other businesses.
This idea took hold when we were on 3.2 and now that we're on 5.7 I want to leverage the global theme because the sidebar rocks! However, is there a way to add customer header at the space level with this theme?
