You have to change the id of the popup, because you are trying to modify CTRs bookmarks button, not the default one, but that code does not change anything for me either.
Code: Select all
#ctraddon_BMB_bookmarksPopup[arrowposition="after_end"]:-moz-locale-dir(ltr) {margin-left: 215px; margin-right: -215px}
#ctraddon_BMB_bookmarksPopup[arrowposition="after_end"]:-moz-locale-dir(ltr) .panel-arrow {margin-left: -210px; margin-right: 210px}
I misread before, your are on Fx50, but he mentioned option is for Fx51+ where it reduces bookmarks toolbars space. Most likely you are trying to achieve the opposite. What toolbar is it on your screenshot you labeled with "middle toolbar", bookmarks toolbar, navigation toolbar or one of CTRs additional toolbars?
Use this to adjust left/right space of your top toolbars
Code: Select all
#navigator-toolbox > toolbar:not(#toolbar-menubar):not(#TabsToolbar):not(#nav-bar):not(#addon-bar) {
padding: 4px !important;
}