phd-userChrome-toolbars-order-and-styling.css

/* toolbars order */
toolbox#navigator-toolbox { margin-top: -1px !important; }
toolbox#navigator-toolbox::after { -moz-box-ordinal-group: 5 !important; margin-top: -1px !important; }
tabs#tabbrowser-tabs { margin-bottom: -1px !important; }
toolbar { box-shadow: none !important; margin: 0 !important; padding: 0 !important; }
toolbar#toolbar-menubar { order: 1 !important; -moz-box-ordinal-group: 1 !important; }
toolbar#PersonalToolbar { order: 2 !important; -moz-box-ordinal-group: 2 !important; }
toolbar#nav-bar         { order: 3 !important; -moz-box-ordinal-group: 3 !important; }
vbox#titlebar           { order: 4 !important; -moz-box-ordinal-group: 4 !important; }
toolbar#TabsToolbar     { order: 4 !important; -moz-box-ordinal-group: 4 !important; }

toolbar[inFullscreen='true'] {
    display: none;
}
toolbar#toolbar-menubar[inFullscreen='true'] {
    display: block !important;
}

toolbarbutton {
    margin: 0 !important;
}