Qt中使用Qss修改边框宽度，字体颜色，修改选择时背景色和字体颜色

以Dialog为例
setStyleSheet("QDialog {border: 1px solid #CCCCCC;}");

以LineEdit为例
setStyleSheet("color:white");

以日历为例
setStyleSheet(

                            "QCalendarWidget QTableView  "

                            "{ "

                            "alternate-background-color:rgb(184, 184, 184);"

                            "background-color:rgb(184, 184, 184);"

                            "} "

                            " QCalendarWidget QAbstractItemView:enabled  "

                            "{ "

                               " selection-color:black;"

                            "  selection-background-color: white;  "

                             "};"

                        );