Add window attributes

Sine Striker

2023-12-19 ed5f9693b3cd7ddcdc746c4bb65dcd9cf7a8268b

 examples/mainwindow/dark-style.qss

@@ -16,6 +16,7 @@
    border: none;
    color: #ECECEC;
    background-color: transparent;
    min-height: 28px;
}