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The scrollbar-background-active style sets the background color of the scrollbar when the thumb is being dragged.


scrollbar-background-active accepts a <color> (with an optional opacity level defined by a <percentage>) that is used to define the background color of a scrollbar when its thumb is being dragged.



The GIF above has reduced quality to make it easier to load in the documentation. Try running the example yourself with textual run docs/examples/styles/

from import App
from textual.widgets import Label

TEXT = """I must not fear.
Fear is the mind-killer.
Fear is the little-death that brings total obliteration.
I will face my fear.
I will permit it to pass over me and through me.
And when it has gone past, I will turn the inner eye to see its path.
Where the fear has gone there will be nothing. Only I will remain.

class Scrollbar2App(App):
    CSS_PATH = "scrollbars2.tcss"

    def compose(self):
        yield Label(TEXT * 10)

if __name__ == "__main__":
    app = Scrollbar2App()
Screen {
    scrollbar-background: blue;
    scrollbar-background-active: red;
    scrollbar-background-hover: purple;
    scrollbar-color: cyan;
    scrollbar-color-active: yellow;
    scrollbar-color-hover: pink;


scrollbar-backround-active: red;


widget.styles.scrollbar_background_active = "red"

See also