#StackBounty: #gui #gtk #gtk3 #gtk2 Traditional scrollbars in GTK2 applications

Bounty: 100

To enable traditional scrollbars with scroll buttons in GTK3 applications I have added the file ~/.config/gtk-3.0/gtk.css with the content

scrollbar {
        -GtkScrollbar-has-backward-stepper: true;
        -GtkScrollbar-has-forward-stepper: true;

scrollbar slider {
        border: 0;
        border-radius: 0;
        min-width: 15px;
        min-height: 15px;

The first screenshot below shows the result in the GTK3 application Pluma. How do I get the same kind of scrollbars in GTK2 applications like PCManFM in the second screenshot below?

Text editor with traditional scrollbar

enter image description here

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