QWidget {
    font-family: "Microsoft YaHei";
    outline: none;
    background-color: #111;
    color: #f5f5f5;
    border: none;
}

QTabWidget {
    font-family: "Microsoft YaHei";
    outline: none;
    background-color: #111;
    color: #f5f5f5;
    border: none;
}

QToolButton {
    border: none;
    color: none;
    background-color: none;
}

QLineEdit {
    height: 25px;
}