Installed the Arc Theme, it doesn't look right

Solution 1:

This is a known issue.

This theme doesn't support Ubuntu 14.04, because its GTK version (3.10) is too old. I'm working on GTK 3.14 support, which will make the theme compatible with Ubuntu 15.04. I'm sorry about this, but I don't have enough resources to backport the theme to older GTK versions.

Source: https://github.com/horst3180/Arc-theme/issues/7

Workaround

Depending on which Arc theme you are using, edit the corresponding .css file. Even better, edit all of them and fix all Arc themes on 14.04:

• Arc: sudo gedit /usr/share/themes/Arc/gtk-3.0/gtk.css

• Arc Dark: sudo gedit /usr/share/themes/Arc-Dark/gtk-3.0/gtk.css

• Arc Darker: sudo gedit /usr/share/themes/Arc-Darker/gtk-3.0/gtk.css

Once gedit opens press Ctrl + F and type the word dashed

Now simply replace the highlighted word dashed with the word none

i.e. change this line: outline-style: dashed; to this: outline-style: none;

Save, close, and you're done. Enjoy.

Solution 2:

sudo gedit /usr/share/themes/Arc-Dark/gtk-3.0/gtk.css

on line 26 comment it to be like this

/*outline-style: dashed;*/

save and enjoy