The Python library "textual" is primarily used for developing console-based applications with a user interface, and it does not use CSS to style its UI elements. Instead, it provides its own set of classes and properties to control the layout and positioning of the UI elements within the console window.

The "textual" library defines a set of views that can be used to organize and display UI elements, including labels, buttons, input fields, and more. These views can be arranged within other views to create a hierarchy of UI elements.

To control the positioning of UI elements within a view, the "textual" library provides properties such as left, right, top, and bottom, which can be used to specify the position of an element relative to the edges of its parent view. Additionally, the library provides properties such as width and height to control the size of the UI elements.

Overall, the positioning of UI elements in the "textual" library is primarily controlled through the library's own set of classes and properties, rather than through CSS.
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