scrollbar-corner-color sets the color of the gap between the horizontal and vertical scrollbars.
scrollbar-corner-color accepts a
<color> (with an optional transparency level defined by a
<percentage>) that is used to define the color of the gap between the horizontal and vertical scrollbars of a widget.
The example below sets the scrollbar corner (bottom-right corner of the screen) to white.
from textual.app 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 ScrollbarCornerColorApp(App): def compose(self): yield Label(TEXT.replace("\n", " ") + "\n" + TEXT * 10) app = ScrollbarCornerColorApp(css_path="scrollbar_corner_color.css")