Widget > QLabel { font: 24px 'Segoe UI', 'Microsoft YaHei'; } StackedWidget { border: 1px solid rgb(229, 229, 229); border-right: none; border-bottom: none; border-top-left-radius: 10px; background-color: rgb(249, 249, 249); } Window { background-color: rgb(243, 243, 243); } CustomTitleBar>QLabel#titleLabel { color: black; background: transparent; font: 13px 'Segoe UI'; padding: 0 10px } MinimizeButton { qproperty-normalColor: black; qproperty-normalBackgroundColor: transparent; qproperty-hoverColor: black; qproperty-hoverBackgroundColor: rgba(0, 0, 0, 26); qproperty-pressedColor: black; qproperty-pressedBackgroundColor: rgba(0, 0, 0, 51) } MaximizeButton { qproperty-normalColor: black; qproperty-normalBackgroundColor: transparent; qproperty-hoverColor: black; qproperty-hoverBackgroundColor: rgba(0, 0, 0, 26); qproperty-pressedColor: black; qproperty-pressedBackgroundColor: rgba(0, 0, 0, 51) } CloseButton { qproperty-normalColor: black; qproperty-normalBackgroundColor: transparent; }