Is there a way to make the corners squared in ambiance or another theme for ubuntu 14.04?

I prefer the look and feel of squared corners.

1 Answer 1


Edit unity.css;

  1. Open a terminal with Ctrl+Alt+t;

  2. Type in the terminal;
    cd /usr/share/themes/Ambiance/gtk-3.0/apps/

  3. Now type;
    sudo -i gedit unity.css

  4. In gedit (text editor) press Ctrl+f & in the search field that appears type;

  5. You should see the search phrase highlighted, our interest is in the proceeding text;
    : 6px 6px 0 0;

  6. Modify this text so that the line reads;
    border-radius: 0px 0px 0 0;

    I recommend keeping the px indicators in this line for easy future reference

  7. Save and Exit the document.

  8. Logout& back in, or change the theme & back again, enjoy!

This method should work with other themes as well, replacing Ambiance in the directory above with the appropriate theme package name;


Then modifying the corresponding unity.css file as before.

Keep in mind that for some themes there may be another border-radius entry in a separate css class within the same unity.css document that has to do with the window when it is not in focus.

This class will have the name;


the border-radius value here will also need to be changed in order for square corners to work for windows currently unfocused.

  • sudo gedit ... might make a mess, so sudo nano ... or using gksudo may be better
    – Wilf
    Commented Jun 19, 2015 at 14:10
  • post updated, I hope this didn't cause anyone any issues... funny to answer my own question, goes to show what a bit of poking around can offer.
    – proxe
    Commented Jun 21, 2015 at 12:09
  • It should be fine :D (the entire running GUI program as root = stuff ends up owned by root is a bit controversial (e.g.). It just annoying when it makes a mess. N.B. I think sudo -H can be used as well as gksudo
    – Wilf
    Commented Jun 21, 2015 at 12:30

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