QTreeView {
    alternate-background-color: yellow;
    show-decoration-selected: 1;
}
QTreeView::item:selected:active {
    background: qlineargradient(x1:0, y1:0 x2: 0, y2: 1, stop: 0 #fea1f1 stop: 1 #567dbc)
}
QTreeView::branch {
    border: 2px
}