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I'd like to swap the place of x button from right to left because of it's more usual for me and my user (a forum for classmates)! because: our desktops is gnome.
you can find what i'm saying here:
I found the option is "a.close" in style.css
I copied a.close part to custom.css of the current theme.
right: 20px; to:
left: 20; right: none;
cascading does not work. it's read from