/*设置堆栈按钮样式*/
QPushButton {
/*    padding: 3px 20px;*/
/*    text-align:center;*/
    background-color:orange;
    border-radius:15px;
}
QPushButton:hover {
/*    padding: 3px 20px;*/
/*    text-align:center;*/
    background-color:#dddddd;
    border-radius:15px;
}
QPushButton:pressed {
/*    padding: 3px 20px;*/
/*    text-align:center;*/
    background-color:#9f9f9f;
    border-radius:15px;
}