Change topbar content

Under Appearance → Widgets you can click on the “Topbar Left” and “Topbar Right” panels. Inside these panels are widgets that can be opened as well to change the default content.

Change topbar colors

Under Appearance → Customize → Topbar you can change the colors of the topbar.

Hide topbar

Under Appearance → Customize → Topbar you can enable the “Hide on desktop” and “Hide on tablet & mobile” switches to hide the topbar.