Is it possible to remove this line most GTK applications have in the Gnome version?

English Applications
1

So the first screenshot is from a Tumbleweed installation and the second is from a Debian installation. As you can notice, there is a line in OpenSUSE’s version which separates the top bar from the body of the application. Is it possible to remove that line? (Ignore Nautilus line)

http://i57.tinypic.com/20k7tc7.png

http://i61.tinypic.com/1444nbq.png

2

These are different themes. Have a look at the edges of the windows and it’s clear they look alike, but are not the same.

3

Both are default Adwaita

4

Today came back to Tumbleweed, and now looking for info about this issue I’ve found it’s not a 3.18 problem, but that it’s from 3.16.

A fix is available in Arch forum → https://bbs.archlinux.org/viewtopic.php?id=195906

“You can create ~/.config/gtk-3.0/gtk.css with the following content and restart the shell.”*

.header-bar.default-decoration {
    padding-top: 3px;
    padding-bottom: 3px;
    border: none;
    background-image: linear-gradient(to bottom,
                                      shade(@theme_bg_color, 1.05),
                                      shade(@theme_bg_color, 0.99));
    box-shadow: inset 0 1px shade(@theme_bg_color, 1.4);
}

.header-bar.default-decoration .button.titlebutton {
    padding-top: 2px;
    padding-bottom: 2px;
}