GNOME 3 theme for Firefox — Previously known as "Adwaita"
Hide title bar if window is maximized.
This extension created only for GNOME 3. It can create problems with another DE (KDE, XFCE, etc). However, you can use HTitle at your own risk (need enable "legacy" mode on settings page).
Collections are groups of related add-ons that anyone can create and share.Explore Collections