QPushButton_9 { font: 15px; min-width:2em; font-family:黑体; padding: 10px; border-radius: 5px; } QPushButton_9:hover { background-color: #2E3648; color: #2E3648; } QPushButton_9:pressed, QPushButton:checked { border: 1px solid #2E3648; color: #2E3648; }