QToolBar {
        margin: 0px;
        padding: 0px;
}

QToolBar > QToolButton {
        padding: 0px;
        margin-top: 2px;
        margin-bottom: 2px;
}

QToolBar > QToolButton[popupMode="1"] {
        padding-right: 6px;
        padding-left: 6px;
}