Cannot move styles & formatting window

Yesterday, I opened a document I worked on earlier. When I needed to change Styles and Formatting, I opened the S+F window. Somehow it had changed place on the screen, and now is SO HIGH on the screen, that the top bar (with which you can move the window around) is way above the top edge of my screen.

There is no way I can drag it to a lower position. Is there a way to restore the position of the S+F window to a more normal position?

EDIT: Even when I open Calc, the S+F window is in the same place.

Please help. Thank you in advance.

If in Windows OS, please try.
Select the S+F window.
with the arrows keys move the window.

Thank you VERY much, Mario!!
I’m under Ubuntu, but it works the same way.