MainWindow 0 0 698 589 MainWindow * { background: yellow; padding: 2px; border-radius: 4px; } QGroupBox { border: 1px solid gray; } QAbstractButton { background: cyan; } QFrame, QMenuBar { background: magenta; } QLineEdit, QSpinBox { background: white; } #gb1 * { } #gb2 * { border: 1px solid blue; } #gb3 * { border: 0px solid blue; } #gb4 * { border-image: url("images/pushbutton.png") 6 6 6 6; border-width:6px; } No border QFrame::StyledPanel QFrame::Raised PushButton RadioButton CheckBox LineEdit ComboBox New Item New Item New Item New Item New Item 0px border QFrame::StyledPanel QFrame::Raised PushButton RadioButton CheckBox LineEdit ComboBox New Item New Item New Item New Item New Item border-image QFrame::StyledPanel QFrame::Raised PushButton RadioButton CheckBox LineEdit ComboBox New Item New Item New Item New Item New Item 1px border QFrame::StyledPanel QFrame::Raised PushButton RadioButton CheckBox LineEdit ComboBox New Item New Item New Item New Item New Item 0 0 698 24 File Edit Open Close